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

### Instruction:
Autumn was constantly misplacing her pencils.  At the start of the school year, she purchased a pack of 20 pencils.  In the first month of school, she misplaced 7 pencils, broke 3 pencils and had to throw them away, she found 4, and bought 2.  How many pencils did Autumn have left?

### Response:
 Mwanzoni mwa mwaka wa shule, alikuwa na kalamu 20.
Katika mwezi wa kwanza wa shule, alipoteza kalamu 7, alivunja kalamu 3 na kuzitupa, alipata kalamu 4, na kununua kalamu 2.
Hivyo alibakiwa na 20 - 7 - 3 + 4 + 2 = <<20-7-3+4+2=16>>16 kalamu.