45 meters is 20% more than that.
45米比多少多20%．
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">45 / (6/5)</gadget>
<output>75/2 = around 37.5</output>

<result>75/2 = around 37.5</result>