A piece of iron wire is 1 meter long, cut off 5 cm each time, how much is left after cutting 6 times
一根铁丝长1米，每次剪去5厘米，剪了6次后还剩下多少
<gadget id="calculator">1 * 100</gadget>
<output>100</output>

<gadget id="calculator">5 * 6</gadget>
<output>30</output>

<gadget id="calculator">100 - 30</gadget>
<output>70</output>

<gadget id="calculator">70 / 10</gadget>
<output>7</output>

<result>7</result>