12 footballs are distributed to 4 classes on average, the number of footballs allocated to each class accounts for the total number ((())/(())), how many footballs are allocated to each class.
12个足球平均分给4个班，每班分得足球个数占总个数的((())/(()))，每班分得多少个．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">12 * (1/4)</gadget>
<output>3</output>

<result>3</result>