Subtract 4 continuously from 120, how many times after subtraction, the result is 12.
从120里连续减去4，减多少次后，所得的结果是12．
<gadget id="calculator">120 - 12</gadget>
<output>108</output>

<gadget id="calculator">108 / 4</gadget>
<output>27</output>

<result>27</result>