Click「Flag」to begin. 1.On the left side, generate a fraction randomly (only include the multiple of 2 to11) [numerator: 1~99 , denominator: 1~100] 2. Player finds the simplest form of the fraction 3. Input the numerator and the denominator of the simplest form respectively 4a. Show 「Tick」(+10) if correct，next question 4b. Show 「Cross」(-10) if wrong，click 「NEXT」 to next question 5. Player could click 「Hint」to ask for help
