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

### Instruction:
James has a rainwater collection barrel.  For each inch of rain he collects 15 gallons.  On Monday it rained 4 inches and on Tuesday it rained 3 inches.  He can sell water for $1.2 per gallon.  How much money did he make from selling all the water?

### Response:
 Jumla ya maji ya mvua yaliyokusanywa ni inchi 4 * galoni 15 + inchi 3 * galoni 15 = <<4*15+3*15=90>>90 galoni.
Aliuza galoni 90 * $1.2 = <<90*1.2=108>>108 dola za maji.