35r+10+20p
you would multiply by 5 to all the numbers in the parantheses
4 x 100
100 + 100 + 100 + 100
400
four hundred
40 x 10
Normally you will see these expressions in reverse order with descending powers of the variable.
-4y^4 + y^3 - y^2 + 11y + 9
So you start with the high order terms and end with a constant.