A large engine has two wheels connected by a belt, the diameter of the big wheel is 1.2m, and the diameter of the small wheel is 0.3m. , if the big wheel turns 3 times, how many times does the small wheel turn?
一台大型发动机上有两个用皮带相连的轮子，大轮子的直径是1.2m，小轮子的直径是0.3m．，若大轮子转3圈，小轮子转多少圈？
<gadget id="calculator">3.14 * 1.2 * 3</gadget>
<output>11.304</output>

<gadget id="calculator">3.14 * 0.3</gadget>
<output>0.942</output>

<gadget id="calculator">11.304 / 0.942</gadget>
<output>12</output>

<result>12</result>