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

### Instruction:
 Elsa anapata 500 MB ya data ya simu kila mwezi. Ikiwa anatumia 300 MB kutazama Youtube na 2/5 ya kile kilichobaki kwenye Facebook, anabakiwa na data ngapi?


### Response:
 Elsa anabakiwa na 500-300 = <<500-300=200>>200 MB ya data baada ya kutazama Youtube.
Kisha, 200*(2/5) = <<200*(2/5)=80>>80 MB inatumika kwenye Facebook.
Hatimaye, Elsa anabakiwa na 200-80 = <<200-80=120>>120 MB ya data.