If the gap between a certain number and 5.46 is 3.97 and the number is less than 5.46, find the sum of the number and 5.46.
5.46 5.46 3.97 [OP_SUB] [OP_ADD]
var_a = 5.46
var_b = 5.46
var_c = 3.97
var_d = var_b - var_c
var_e = var_a + var_d
print('{:.2f}'.format(round(var_e+1e-10,2)))