There are numbers with two decimal places that give 1.7 if rounded to two decimal places. Find the value of subtracting the smallest of these numbers from the largest, including the decimal point.
1.74 1.65 [OP_SUB]
var_a = 1.74
var_b = 1.65
var_c = var_a - var_b
print('{:.2f}'.format(round(var_c+1e-10,2)))