Use 3 excavators (5/9) to dig (15/2) cubic meters per hour, how many cubic meters each excavator excavates per hour on average?
用3台挖土机(5/9)小时挖土(15/2)方，平均每台挖土机每小时挖土多少方？
<gadget id="calculator">15 / 2</gadget>
<output>15/2 = around 7.5</output>

<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">(15/2) / 3 / (5/9)</gadget>
<output>9/2 = around 4.5</output>

<result>9/2 = around 4.5</result>