Hello, would love help with these two problems, please.

I cannot get either of them to work and it's frustrating me to no end. Thanks!

1. Marta borrowed $1,770 from Jasper on November 15, 2016, and agreed to repay the debt with simple interest at the rate of 7.7% on June 3, 2017.

How much interest was owed on June 3?(Do not round your intermediate calculations and round the final answer to 2 decimal places.)

2.Three payments are scheduled as follows: $1,230 is due today, $910 is due in five months, and $1,450 is due in eight months. The three payments are to be replaced by a single equivalent payment due ten months from now.

What should the payment be if money is worth 5.9%? Use ten months from now as the focal date.(Do not round your intermediate calculations and round the final answer to 2 decimal places.)