/// <summary>
 /// Verify correctness of Division
 /// </summary>
 /// <param name="value">value from user</param>
 /// <param name="exp">real value</param>
 /// <returns></returns>
 public static bool VerifyDivision(string value, ValueDecimal2 exp)
 {
     return(Convert.ToDecimal(value) == exp.correctanswer);
 }
 /// <summary>
 /// Verify correctness of Multiplication
 /// </summary>
 /// <param name="value">value from user</param>
 /// <param name="exp">real value</param>
 /// <returns></returns>
 public static bool VerifyMultiplication(string value, ValueDecimal2 exp)
 {
     return(exp.correctanswer == Convert.ToDecimal(value));
 }