James invests $2000 a week into his bank account.  He had $250,000 in his account when the year started.  At the end of the year, he gets a windfall that is worth 50% more than what he has in his bank account.   How much money does he have?
He deposited 2000*52=$<T>multiply(2000, 52)=104000 into his account
So he has 250000+104000=$<T>add(250000, 104000)=354000
His windfall is worth .5*354,000=$<T>multiply(0.5, 354000)=177000.0 more than his current account
That means he got 177,000+354,000=$<T>add(177000, 354000)=531000
So he had a total of 531,000+354,000=$<T>add(531000, 354000)=885000
,000