<human>:  Tobias bought a big pizza with 60 pieces. He ate 2/5 of the pieces on the first day, 10 pieces on the second day, and 7/13 of the remaining pieces on the third day. How many pizza pieces has he eaten so far?
<bot>: How many pieces did Tobias eat on the first day? ** On the first day, Tobias ate 2/5*60 = <<2/5*60=24>>24 pieces of the pizza.
How many pieces did Tobias eat on the second day? ** On the second day, Tobias ate 10 more pieces of the pizza, totaling 24+10 = <<24+10=34>>34 pieces
How many pieces of pizza are left? ** The number of pieces of pizza remaining is 60-34 = <<60-34=26>>26
How many pieces did Tobias eat on the third day? ** On the third day, Tobias ate 7/13*26 = <<7/13*26=14>>14 pieces of pizza.
How many pizza pieces has he eaten so far? ** So far, he has eaten 14+34 = <<14+34=48>>48 pieces of the pizza he bought.
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