On a drawing with a scale of 10:1, the length of a part is measured to be 15cm. What is the actual length of this part?
在一张比例尺为10：1的图纸上，量得一个零件的长度是15cm，这个零件的实际长度是多少．
<gadget id="calculator">10 / 1</gadget>
<output>10</output>

<gadget id="calculator">15 / 10</gadget>
<output>3/2 = around 1.5</output>

<result>3/2 = around 1.5</result>