100 monks eat 100 steamed buns, big monks eat 4 buns, and young monks eat 1 bun for every 4 people. How many small monks are there?
100个和尚吃100个馒头，大和尚每人吃4个，小和尚每4人吃1个，小和尚有多少人．
<gadget id="calculator">100 / 4</gadget>
<output>25</output>

<gadget id="calculator">100 - 25</gadget>
<output>75</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">4 - (1/4)</gadget>
<output>15/4 = around 3.75</output>

<gadget id="calculator">75 / (15/4)</gadget>
<output>20</output>

<gadget id="calculator">100 - 20</gadget>
<output>80</output>

<result>80</result>