John Porter is an hourly employee of Motter Company located in New York City. This week, Porter had to travel to the company's regional office in Albany. He left Sunday at noon and arrived in Albany at $3$:$00$ P$.$M$.$ During the week, he worked his normal $40$ hours in the Albany office $($Monday through Friday$-9$ A$.$M$.$ to $5$ P$.$M$.).$ In addition, he attended the company's mandatory $4-$hour work training session on Wednesday evening. Porter's hourly rate of payjis $$24\mathrm{.}80$ per hour.

Round the overtime rate to two decimal places and use the rounded amount in subsequent computations. Round the final answers to the nearest cent.

a$.$ Porter's overtime earnings for the week are

b$.$ Porter's total earnings for the week are