diff --git a/src/main/java/seedu/duke/Checker.java b/src/main/java/seedu/duke/Checker.java
index ae69078311..67d83e2972 100644
--- a/src/main/java/seedu/duke/Checker.java
+++ b/src/main/java/seedu/duke/Checker.java
@@ -35,7 +35,7 @@ void getUserAnswer() {
         for (int i = 0; i < test.getNumber(); i++) {
             Problem problem = test.getProblem().get(i);
             ui.print(problem.unsolved());
-            // userInput = ui.readCommand();
+            userInput = ui.readCommand();
             userAnswer[i] = userInput;
             double answer = Double.NEGATIVE_INFINITY;
             try {
diff --git a/src/main/java/seedu/duke/Problem.java b/src/main/java/seedu/duke/Problem.java
index 51291e203e..41d67ce6fe 100644
--- a/src/main/java/seedu/duke/Problem.java
+++ b/src/main/java/seedu/duke/Problem.java
@@ -11,7 +11,7 @@ public Problem(String description, double answer) {
     }
 
     public String solved() {
-        return description + '=' + answer;
+        return description + " = " + answer;
     }
 
     public String unsolved() {
diff --git a/src/main/java/seedu/duke/Record.java b/src/main/java/seedu/duke/Record.java
index 41421cd767..3930d45116 100644
--- a/src/main/java/seedu/duke/Record.java
+++ b/src/main/java/seedu/duke/Record.java
@@ -35,11 +35,9 @@ public Record(LocalDateTime dateTime, double speed, double accuracy, ArrayList<P
         setPsIndex(psIndex);
     }
 
-//    public void print(boolean showProbDetails) {
-//        ui.printRecords(showProbDetails, this);
-//    }
-
     public void print(boolean showProbDetails) {
+        // ui.printRecords(showProbDetails, this);
+
         System.out.println("Date Time: " + getDateTime().format(formatter));
         System.out.println("ProblemSet ID: " + getPsIndex());
         if (showProbDetails) {
diff --git a/src/main/java/seedu/duke/Ui.java b/src/main/java/seedu/duke/Ui.java
index c4041d4ccd..f69f0e6cef 100644
--- a/src/main/java/seedu/duke/Ui.java
+++ b/src/main/java/seedu/duke/Ui.java
@@ -1,17 +1,17 @@
 package seedu.duke;
 
+import java.time.format.DateTimeFormatter;
 import java.util.ArrayList;
 import java.util.Scanner;
-import java.time.format.DateTimeFormatter;
 /**
  * Represents the user interface for interacting with the chatbot.
  */
 public class Ui {
 
     // Pre-defined sentences
-    // private static final String PROBLEM_FORM =
-    //         "To generate a problem set: Input the number and difficulty like below: \n" +
-    //                 "< generate -t [type] -n [number] -d [maximum digit] -l [length of formula] >";
+    private static final String PROBLEM_FORM =
+             "To generate a problem set: Input the number and difficulty like below: \n" +
+                     "< generate -t [type] -n [number] -d [maximum digit] -l [number of operands] >";
     private static final String INPUT_INSTRUCTION =
             "Input Instructions:\n" +
                     "[operators]: can be + - * /, you can combine any of them.\n" +