Chaoyang Primary School spent 340 yuan to buy 5 footballs. The school still wants to buy 13 more footballs like this, how much money do they need to prepare?
朝阳小学买5个足球用去了340元．学校还想再买13个这样的足球，还需要准备多少钱？
<gadget id="calculator">340 / 5</gadget>
<output>68</output>

<gadget id="calculator">68 * 13</gadget>
<output>884</output>

<result>884</result>