The store shipped 4 boxes of soccer balls, each with 20 balls, and the total price of these soccer balls was 3360 yuan. How much is an average football worth?
商店运来4箱足球，每箱20个，这些足球的总价为3360元．平均每个足球价值多少元？
<gadget id="calculator">4 * 20</gadget>
<output>80</output>

<gadget id="calculator">3_360 / 80</gadget>
<output>42</output>

<result>42</result>