The blue sky sporting goods store has bought a new batch of basketballs and footballs. It is known that the ratio of the new basketballs to footballs is 5:3, and the basketballs are 12 more than the footballs. Do you know how many footballs the blue sky sports goods store bought this time? ?
蓝天体育用品商店新进了一批篮球和足球，已知新进的篮球和足球的比是5：3，篮球比足球多进了12个，你知道蓝天体育用品商店这次进了多少个足球吗？
<gadget id="calculator">5 - 3</gadget>
<output>2</output>

<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<gadget id="calculator">6 * 3</gadget>
<output>18</output>

<result>18</result>