(5/6) of a road is 1250 meters, what is 30% of it?
一条路的(5/6)是1250米，它的30%是多少．
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">1_250 / (5/6)</gadget>
<output>1_500</output>

<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1_500 * (3/10)</gadget>
<output>450</output>

<result>450</result>