A sporting goods store sells basketballs at a 20% discount. How many basketballs can you buy with the money you used to buy for 12 basketballs?
体育用品商店把篮球打八折出售，原来买12只篮球的钱，现在可以买多少只篮球．
<gadget id="calculator">12 / 0.8</gadget>
<output>15</output>

<gadget id="calculator">0.8 / 0.8</gadget>
<output>1</output>

<gadget id="calculator">15 / 1</gadget>
<output>15</output>

<result>15</result>