Write a simple integer calculator(support twointegerscalculation+,-,* and/) in MIPS -QtSpim assembly language

Requirement:

1.The MIPS program should read input string is to be all on one line / one time.

For example, input: total =53*6(entered by user)

output: total=168

The following input format is Unaccepted:

Please enter the first positive integer value

Please enter the second positive integer value:

Please enter the operation

2. Accept input a string up to 20 characters

3. The program should display a message when it stops