Several children lined up, starting from the first person on the left, every 2 people were given an apple, starting from the first person on the right, every 4 people were given an orange, as a result, 10 children got both apples and oranges, So how many of these children are there at most?
若干位小朋友排成一行，从左面第一个人开始，每隔2人发一个苹果，从右面第一人开始，每隔4人发一个桔子，结果有10个小朋友苹果和桔子都拿到了，那么这些小朋友最多有多少人．
<gadget id="calculator">2 + 1</gadget>
<output>3</output>

<gadget id="calculator">4 + 1</gadget>
<output>5</output>

<gadget id="calculator">3 * 5</gadget>
<output>15</output>

<gadget id="calculator">15 * 11</gadget>
<output>165</output>

<gadget id="calculator">165 + 1</gadget>
<output>166</output>

<gadget id="calculator">166 - 5 - 3</gadget>
<output>158</output>

<result>158</result>