The scale of a part drawing is 5:1, and the size on the drawing is 1 cm. What is the actual size of the part?
一副零件图的比例尺是5：1，量得图上尺寸是1厘米，这个零件的实际尺寸是多少．
<gadget id="calculator">5 / 1</gadget>
<output>5</output>

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

<result>1/5 = around 0.2</result>