148 people from the third grade went to visit the zoo. The first batch of 100 people went in, and the rest came in 4 batches. How many people went in on average in each batch?
三年级148人去参观动物园，第一批进去100人，剩下的分4批进场参观，剩下的平均每批进去多少人？
<gadget id="calculator">148 - 100</gadget>
<output>48</output>

<gadget id="calculator">48 / 4</gadget>
<output>12</output>

<result>12</result>