the nasdaq index has decreased by 70 % since year 2000 . how much should the index increase in order to gain the same value as in year 2000 ?
n0 = 70.0
n1 = 2000.0
n2 = 2000.0
t0 = n0 / 100.0
t1 = 1.0 - t0
t2 = t0 / t1
answer = t2 * 100.0
print(answer)