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

### Instruction:
Billy ate 20 apples this week. On Monday, he ate 2 apples. On Tuesday, he ate twice as many as he ate the day before. He’s not sure what he ate on Wednesday. On Thursday, he ate four times as many as he ate on Friday. On Friday, he ate half of the amount he ate on Monday.  How many apples did he eat on Wednesday?

### Response:
 Jumatatu, Billy alikula matofaa 2.
Jumanne, alikula mara mbili ya aliyokula siku iliyopita, kwa hiyo alikula matofaa 2 x 2 = <<2*2=4>>4.
Ijumaa, alikula nusu ya kile alichokula Jumatatu, ambayo inamaanisha alikula matofaa 2 / 2 = <<2/2=1>>1.
Alhamisi, alikula mara nne ya aliyokula Ijumaa, ambayo inamaanisha alikula matofaa 4 x 1 = <<4*1=4>>4.
Kwa hiyo, kwa Jumatatu, Jumanne, Alhamisi, na Ijumaa, Billy alikula jumla ya matofaa 2 + 4 + 4 + 1 = <<2+4+4+1=11>>11.
Kwa kuwa alikula matofaa 20 jumla, hii inamaanisha kuwa Jumatano, alikula 20 - 11 = <<20-11=9>>9 matofaa.