Aunt Zhang distributed fruit to the children in the two classes of the kindergarten. Each person in the big class got 5 peaches and 2 apples, and each person in the small class got 3 peaches and 2 apples. Aunt Zhang distributed 135 peaches and 70 apples in total If there is an apple, how many children are there in the small class?
张阿姨给幼儿园的两个班的孩子分水果，大班每人分得5个桃子和2个苹果，小班每人分得3个桃子和2个苹果，张阿姨一共分出了135个桃子和70个苹果，那么小班有多个少孩子．
<gadget id="calculator">70 / 2</gadget>
<output>35</output>

<gadget id="calculator">35 * 5</gadget>
<output>175</output>

<gadget id="calculator">175 - 135</gadget>
<output>40</output>

<gadget id="calculator">5 - 3</gadget>
<output>2</output>

<gadget id="calculator">40 / 2</gadget>
<output>20</output>

<result>20</result>