The students went on a spring outing, and a group prepared 4 fruits for each of the 12 students in this group. Later, because some parents came, the students and parents shared the fruit equally, and each person only got 3 fruits. How many parents came in total?
同学们去春游，一小组为本组的12位同学每人准备了4个水果．后来因为来了部分家长，同学们和家长平均分了水果，每人实际只分到3个水果．一共来了多少位家长．
<gadget id="calculator">12 * 4</gadget>
<output>48</output>

<gadget id="calculator">48 / 3</gadget>
<output>16</output>

<gadget id="calculator">16 - 12</gadget>
<output>4</output>

<result>4</result>