Please incluide all the process so I can Understand how to solved

Sales for the quarter, all at $$9$ per unit, totaled $33,000$ units leaving $27,000$ units on hand at the end of the quarter.

Required:

Calculate Topanga's cost of goods sold for the first quarter using:

a$.$ FIFO

b$.$ LIFO

c$.$ Average cost

Calculate Topanga's gross profit ratio for the first quarter using FIFO, LIFO, and Average cost.

Comment on the relative effect of each of the three inventory methods on the gross profit ratio.

Complete this question by entering your answers in the tabs below.

Req $1A$

Req $1$B

Req $2$

Req $3$

Calculate Topanga's cost of goods sold for the first quarter using FIFO.