100 monks ate 100 loaves, 1 big monk ate 3 loaves, and 3 young monks ate 1 loaf. Ask how many monks there are.
100个和尚吃了100个面包，大和尚1人吃3个，小和尚3人吃1个．求大和尚有多少个．
<gadget id="calculator">100 * 3</gadget>
<output>300</output>

<gadget id="calculator">300 - 100</gadget>
<output>200</output>

<gadget id="calculator">9 - 1</gadget>
<output>8</output>

<gadget id="calculator">200 / 8</gadget>
<output>25</output>

<result>25</result>