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

### Instruction:
Mary is chopping up some old furniture to make firewood. Chairs make 6 sticks of wood, tables make 9 sticks of wood, and stools make 2 sticks of wood. Mary needs to burn 5 sticks of wood per hour to stay warm. If Mary chops up 18 chairs, 6 tables and 4 stools, how many hours can she keep warm?

### Response:
 Kwanza tafuta kiasi cha kuni Mary anapata kutoka kwenye viti: vipande 6 vya kuni/kiti * viti 18 = <<6*18=108>>108 vipande vya kuni
Kisha tafuta kiasi cha kuni Mary anapata kutoka kwenye meza: vipande 9 vya kuni/meza * meza 6 = <<9*6=54>>54 vipande vya kuni
Kisha tafuta kiasi cha kuni Mary anapata kutoka kwenye stuli: vipande 2 vya kuni/stuli * stuli 4 = <<2*4=8>>8 vipande vya kuni
Sasa ongeza kiasi cha kuni anachopata kutoka kwenye kila chanzo: 108 vipande vya kuni + 54 vipande vya kuni + 8 vipande vya kuni = <<108+54+8=170>>170 vipande vya kuni
Sasa ugawanye jumla ya kiasi cha kuni anachochoma kwa kusalia joto na idadi ya vipande anavyopata kwa saa: 170 vipande vya kuni / vipande 5/saa = <<170/5=34>>34 masaa