Below is an instruction that describes a task. Write a response that appropriately completes the request in French. Please answer in French.

### Instruction:
 Gerald spends $100 a month on baseball supplies. His season is 4 months long. He wants to use the months he's not playing baseball to save up by raking, shoveling, and mowing lawns. He charges $10 for each. How many chores does he need to average a month to save up for his supplies?


### Response:
 Sa saison de jeu dure 4 mois, donc il lui reste 12 - 4 = <<12-4=8>>8 mois pour économiser.
Il a besoin d'économiser 400 $ car 4 x 100 = <<4*100=400>>400
Il doit gagner 50 $ par mois car 400 / 8 = <<400/8=50>>50
Il doit faire 5 tâches par mois car 50 / 10 = <<50/10=5>>5