First question: Use the simple interest formula I=PRT and elementary algebra to find the missing quantities in the table: I (?

First question: Use the simple interest formula I=PRT and elementary algebra to find the missing quantities in the table:

I (?) P ( $100) R ( 14%) T ( 2 years)

Second question: Use the simplest interest formula I= PRT and elementary algebra to find the missing quantities in the table.

I ( $312) P ( $1800) R ( 2%) T (?) Years