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

### Instruction:
There are 180 students in ninth grade. 1/4 of them bombed their finals because they were going through difficult breakups. 1/3rd of the rest didn't show up to take the test, and another 20 got less than a D. How many students passed their finals?

### Response:
 Kwanza tafuta idadi ya wanafunzi walioenda kwenye kipindi kigumu cha kuvunjika kimapenzi: 1/4 * 180 = <<1/4*180=45>>45 wanafunzi
Kisha toa idadi hiyo kutoka kwenye idadi ya wanafunzi wote: 180 wanafunzi - 45 wanafunzi = <<180-45=135>>135 wanafunzi
Kisha ugawe idadi hiyo kwa 3 ili kupata idadi ya wanafunzi ambao hawakufika kufanya mtihani: 135 wanafunzi / 3 = <<135/3=45>>45 wanafunzi
Kisha toa idadi hiyo kutoka kwenye idadi ya wanafunzi wote ili kupata idadi ya wanafunzi waliofaulu: 135 wanafunzi - 45 wanafunzi - 20 wanafunzi = <<135-45-20=70>>70 wanafunzi