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

### Instruction:
Joe and Adam built a garden wall with three courses of bricks. They realized the wall was too low and added 2 more courses. If each course of the wall had 400 bricks, and they took out half of the bricks in the last course to allow easy checkup of the garden, calculate the total number of bricks the wall has.

### Response:
 Walipoongeza safu mbili zaidi kwa ukuta, idadi ya safu ilikuwa 3+2 = <<3+2=5>>5
Kwa kuwa kila safu ina matofali 400, idadi jumla ya matofali kwa safu 5 ni 5*400 = <<5*400=2000>>2000
Ili kuruhusu ukaguzi rahisi wa ukuta, waliondoa 1/2*400 = <<1/2*400=200>>200 matofali kutoka kwenye safu ya mwisho ya ukuta.
Jumla ya matofali ukutani ni 2000-200= <<2000-200=1800>>1800.