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

### Instruction:
Helga went shopping for a new pair of shoes. At the first store, she tried on 7 pairs of shoes. At the second store, she tried on 2 more pairs than at the first store. At the third store, she did not try on any shoes, but she did buy a scarf.  But at the fourth store, she tried on twice as many pairs of shoes as she did at all three other stores combined, before finally choosing a pair to buy.  What is the total number of pairs of shoes Helga tried on before buying her new shoes?

### Response:
 Katika duka la kwanza, alijaribu jozi 7 za viatu.
Katika duka la pili, alijaribu jozi 2 zaidi kuliko katika duka la kwanza, au 7 + 2 = 9 jozi za viatu.
Katika duka la nne, alijaribu jozi mara mbili ya viatu kuliko alivyofanya katika maduka matatu mengine yote pamoja, au 2 * (7 + 9) = <<2*(7+9)=34>>34 jozi za viatu.
Hivyo, Helga alijaribu jumla ya jozi 7 + 9 + 34 = <<7+9+34=50>>50 za viatu kabla ya kununua viatu vyake vipya.