Divide a 1-meter-long line segment into 100 parts on average, how many centimeters are 9 parts
把1米长的线段，平均分成100份，9份是多少厘米
<gadget id="calculator">1 * 100</gadget>
<output>100</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">1 * 9</gadget>
<output>9</output>

<result>9</result>