Mr. Li bought 3 footballs for 126 yuan, and he wants to buy 6 more of the same football. How much money does he need to prepare?
李老师买了3个足球用了126元，他还想再买6个同样的足球，需要准备多少钱？
<gadget id="calculator">126 / 3</gadget>
<output>42</output>

<gadget id="calculator">42 * 6</gadget>
<output>252</output>

<result>252</result>