5 million in 3 days how many days till 1 billion

Question

if i make $5 million in three days, how many days will it take me to make $1 billion dollars

Answer 1

5 * 10^6 / 3 = 1 * 10^9 / X is ratio

(5 * 10^6) * X = 3*(1 * 10^9)

(5 * 10^6 ) X = 3 * 10^9

X = 3*10^9 / 5 * 10^6

X = 0.6 * 10^3 = 0.6 * 1000 = 600