Answer this fraction math question and explain your answer PLEASE !

Can someone answer it, and plot it, for 20 points and brainliest answer? p.s. they're the same ! : )

Diane owes $387 to her brother. if she debits her bank account $161.25 a month to pay him back, how many months will it take her to pay off the debt?

Me! i really need to get this right before 9. prove the divisibility of 7^6+7^5-7^4 by 11. use factoring so you get a number times 11. just tell me the number. i need this done asap