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

### Instruction:
Jacob's water tank can hold up to 50 liters of water. Jacob collects water from the river and rain to fill his water tank. He can collect 800 milliliters of water from the rain and 1700 milliliters of water from the river every day. How many days does Jacob need to fill up his water tank?

### Response:
 Jacob anakusanya mililita 800+1700= <<800+1700=2500>>2500 za maji kutoka mvua na mtoni, mtawalia, kila siku.
Kwa kuwa lita 1 ni sawa na mililita 1000, basi lita 50 ni sawa na 50x1000= <<50*1000=50000>>50,000 mililita za maji.
Hivyo, Jacob anahitaji siku 50,000/2500= <<50000/2500=20>>20 kujaza tangi lake la maji.