Reverse engineer below Assembly code to C program ( Write C program for below assembly code)

main:

pushl %ebp

movl %esp,%ebp

subl $12,%esp

pushl %ebx

pushl %esi

movl $13,-4(%ebp)

movl $5,-8(%ebp)

movl -4(%ebp),%eax

cltd

idivl -8(%ebp)

movl %edx,%esi

movl %eax,%ebx

movl -8(%ebp),%ebx

subl %esi,%ebx

movl -4(%ebp),%eax

imull %ebx,%eax

movl %eax,-12(%ebp)

leal -20(%ebp),%esp

popl %esi

popl %ebx

leave

ret