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

### Instruction:
Bob wants to build a pyramid out of legos with 3 levels where the bottom level has 7 legos per side and each level has one less lego per side than the level below it. How many legos total will he need?

### Response:
 Kwa ngazi ya kwanza, atahitaji lego 7 kwa kila upande * pande 7 = <<7*7=49>>49 lego.
Kwa ngazi ya pili, atahitaji lego 7 kwa kila upande - lego 1 = <<7-1=6>>6 lego kwa kila upande.
Kwa ngazi ya pili, atahitaji lego 6 kwa kila upande * pande 6 = <<6*6=36>>36 lego.
Kwa ngazi ya tatu, atahitaji lego 6 kwa kila upande - lego 1 = <<6-1=5>>5 lego kwa kila upande.
Kwa ngazi ya tatu, atahitaji lego 5 kwa kila upande * pande 5 = <<5*5=25>>25 lego.
Jumla, atahitaji lego 49 + lego 36 + lego 25 = <<49+36+25=110>>110 lego.