Problem $3-3($Algo$)$

Given the following history, use a three$-$quarter moving average to forecast the demand for the third quarter of this year. Note that the $1$st quarter is January, February, and March; $2$nd quarter April, May, June; $3$rd quarter July, August, September; and $4$th quarter October, November, December.

Note: Round final answer to a whole number.

JANUARY FEBRUARY MARCH APRIL MAY JUNE JULY AUGUST SEPTEMBER OCTOBER NOVEMBER DECEMBER

Last year $145165170210220245190180175245270295$

This year $145170180235275225$