please calculate the cost of good sold for everything with FIFO method.

Purchases: Frog shaped candy $100*4=400$

Marshmallow pink $50*3=150$

Chewing gum $50*8=400$

Dog shaped candy $30*9=270$

Frog shaped candy $600*3=1800$

Chocolate chip cookies $330*2=660$

Marshmallow red $200*5=1000$

Marshmallow pink $150*6=900$

Chewing gum $200*1\mathrm{.}5=300$

Smarties $300*10=3000$

Returned items:

Frog shaped candy $-60*4=-240$

Marshmallow pink $-20*3=-60$

Selling

Frog shaped candy $400*15=6000$

Chocolate chip cookies $100*4=400$

Marshmallow red $200*8=1600$

Smarties $200*30=6000$

frog shaped candy $40*50=2000$

dog shaped candy $10*50=500$

This is the remaining goods :

Frog shaped candy $200$

Chocolate chip cookies $230$

Marshmallow pink $180$

Chewing gum $250$

Smarties $100$

Dog shaped candy $20$

Marshmallow red $0$