3 children (1/5) cut grass (2/9) kilograms in an hour, how many kilograms of grass does each child cut per hour on average?
3个小朋友(1/5)小时割草(2/9)千克，平均每个小朋友每小时割草多少千克？
<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

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

<gadget id="calculator">(2/9) / (1/5) / 3</gadget>
<output>10/27 = around 0.37037</output>

<result>10/27 = around 0.37037</result>