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

### Instruction:
James hurt himself exercising.  The pain subsided after 3 days, but he knew that the injury would take at least 5 times that long to fully heal. After that, he wanted to wait another 3 days before he started working out again.  If he wants to wait 3 weeks after that to start lifting heavy again, how long until he can lift heavy again?

### Response:
 Jeraha litahitaji kupona kwa siku 3*5=<<3*5=15>>15
Hivyo aliamua kusubiri siku 3+15=<<3+15=18>>18
Kisha angekusubiri siku 3*7=<<3*7=21>>21 zaidi kabla ya kuanza kufanya mazoezi mazito tena
Hivyo anahitaji kusubiri siku 18+21=<<18+21=39>>39