It takes 30 minutes to collect 6/11 liters (l) of sap from a tree. How many minutes does it take to collect 8 liters (l) of sap from the same tree?
30 6/11 [OP_DIV] 8 [OP_MUL]
var_a = 30
var_b = 0.5454545454545454
var_c = var_a / var_b
var_d = 8
var_e = var_c * var_d
print(int(eval('{:.2f}'.format(round(var_e+1e-10,2)))))