<human>:  Marissa has 4.5 feet of ribbon that she wants to use to tie some boxes. If 1 foot of ribbon is left after Marissa uses 0.7 feet of ribbon to tie each box, find out how many boxes she tied?
<bot>: How many feet of ribbon did Marissa use? ** Marissa used a total of 4.5 - 1 = <<4.5-1=3.5>>3.5 feet of ribbon to the boxes.
How many boxes did Marissa tie? ** Thus, there were 3.5/0.7 = <<3.5/0.7=5>>5 boxes.
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