Okay :0

\(999999\cdot222222=2,222217778\times_{10^{11}}\)

Minus \(2\times10^{11}\) we have \(2,222177778\times_{10^{10}}\)

Minus \(2\times10^{10}=221777778\)

So \(999999\cdot222222=222221777778\)

Next : \(333333\cdot333334=1,111112222\times_{10^{11}}\)

Do as upper we have answer : \(333333\cdot333334=111111222222\)

So \(999999\cdot222222+333333\cdot333334=222221777778+111111222222=333333000000\)