I'm independently learning how to translate the high-level language (HLL) code into MIPS assembly language; could someone assist me with the following example?

HLL Code:

calculation = 0;

for (a = 1; a <= b; a++)

sum += a;

I'm assuming the calculation is in register $s0, a is in register $s1, and b is in register $s2. Determine the total number of instructions executed, in terms of the value of b.