At the second store, she tried on 7+2=<<7+2=9>>9 pairs of shoes.

Therefore, at the first three stores, she tried on 7+9+0=<<7+9+0=16>>16 pairs of shoes.

At the fourth store, she tried on 16*2=<<16*2=32>>32 pairs of shoes.

Thus, in total, she tried on 16+32=<<16+32=48>>48 pairs of shoes.

# Answer

48
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
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?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
48
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?
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