On a drawing with a scale of 10:1, the length of a part is measured to be 2 cm. What is the actual length of the part?
在比例尺是10：1的图纸上，量得一个零件的长度是2厘米，这个零件的实际长度是多少．
<gadget id="calculator">10 / 1</gadget>
<output>10</output>

<gadget id="calculator">2 / 10</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/5) * 10</gadget>
<output>2</output>

<result>2</result>