Naughty and Xiaoxiao drew the same telegraph pole. Naughty used 1:2500 to draw 16cm, and Xiaoxiao used 1:100000 to draw how many cm.
淘气和笑笑画同一根电线杆，淘气用1：2500画了16cm，则笑笑用1：100000画了多少cm．
<gadget id="calculator">1 / 2_500</gadget>
<output>1/2_500 = around 0.0004</output>

<gadget id="calculator">16 / (1/2_500)</gadget>
<output>40_000</output>

<gadget id="calculator">1 / 100_000</gadget>
<output>1/100_000 = around 0.00001</output>

<gadget id="calculator">40_000 * (1/100_000)</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>