The trolley has 5 tires (including the spare), and the cart has 7 tires. There are 106 tires, how many cars can be loaded at most without surplus.
小车有5个轮胎(包括备用)，大车有7个轮胎．现有106个轮胎，最多可装多少辆车而无剩余．
<gadget id="calculator">17 + 3</gadget>
<output>20</output>

<result>20</result>