The scale of a picture is 1:100000, the distance on the picture is 3.6 cm, how many kilometers is the actual distance.
一幅图的比例尺是1：100000，图上距离是3.6厘米，实际距离是多少千米．
<gadget id="calculator">1 / 100_000</gadget>
<output>1/100_000 = around 0.00001</output>

<gadget id="calculator">3.6 / (1/100_000) / 100_000</gadget>
<output>3.6</output>

<result>3.6</result>