The diameter of the front wheel of a special bicycle for children is 28 cm, and the diameter of the rear wheel is 35 cm. If the front wheel travels 40 laps, how many laps does the rear wheel need to travel?
一种儿童专用自行车的前轮直径是28厘米，后轮直径是35厘米，前轮行走40圈的路程，后轮要行走多少圈？
<gadget id="calculator">3.14 * 28 * 40</gadget>
<output>3_516.8</output>

<gadget id="calculator">3.14 * 35</gadget>
<output>109.9</output>

<gadget id="calculator">3_516.8 / 109.9</gadget>
<output>32</output>

<result>32</result>