Answer
$15000000$
Work Step by Step
The total spending can be represented by the sum of the infinite geometric series with first term $a_1=6,000,000$ and common ratio $r=0.6$. An infinite geometric series converges if and only if $|r|\lt1$, where $r$ is the common ratio. If it converges, then it equals $\frac{a_1}{1-r}$ where $a_1$ is the first term.
Here $0.6\lt1$.
Hence the sum: $\dfrac{6000000}{1-0.6}=15000000$