Robie filled some plastic boxes with hockey cards. There were 10 cards in each box but 5 cards were not placed in a box. He gave away 2 boxes to his friends and he has 5 boxes with him. How many cards did Robie have in the beginning?
Robie filled a total of 2 + 5 = 
<gadget id="calculator">2+5</gadget>
<output>7</output>
7 boxes.
So, he had 7 x 10 = 
<gadget id="calculator">7*10</gadget>
<output>70</output>
70 hockey cards from the 7 boxes.
Thus, he had a total of 70 + 5 = 
<gadget id="calculator">70+5</gadget>
<output>75</output>
75 cards in the beginning.

<result>75</result>