Yuna's family drank 0.4 of the milk today, and the amount of milk was 0.69 liters (L). Find how many liters (L) of milk were in the beginning.
0.69 0.4 [OP_DIV]
var_a = 0.69
var_b = 0.4
var_c = var_a / var_b
print('{:.2f}'.format(round(var_c+1e-10,2)))