Mr. Wang brought 300 yuan and wanted to buy 5 footballs, but it was still 45 yuan short. How much is a football? (column equation solution)
王老师带了300元，想买5个足球，可是还差45元，一个足球多少元？(列方程解答)
<gadget id="calculator">300 + 45</gadget>
<output>345</output>

<gadget id="calculator">345 / 5</gadget>
<output>69</output>

<result>69</result>