What is the sum of 15.58, 21.32, 642.51, and 51.51?
15.58 21.32 [OP_ADD] 642.51 [OP_ADD] 51.51 [OP_ADD]
var_a = 15.58
var_b = 21.32
var_c = var_a + var_b
var_d = 642.51
var_e = var_c + var_d
var_f = 51.51
var_g = var_e + var_f
print('{:.2f}'.format(round(var_g+1e-10,2)))