How many consecutive 12.8s are subtracted from 128 to get 12.8.
从128里连续减去多少个12.8得12.8．
<gadget id="calculator">128 - 12.8</gadget>
<output>115.2</output>

<gadget id="calculator">115.2 / 12.8</gadget>
<output>9</output>

<result>9</result>