The construction team built a road and completed the project in 4 days (4/15), how much of the project was completed every day.
工程队修一条公路，4天完成这项工程的(4/15)，每天完成这项工程的多少．
<gadget id="calculator">4 / 15</gadget>
<output>4/15 = around 0.266667</output>

<gadget id="calculator">(4/15) / 4</gadget>
<output>1/15 = around 0.066667</output>

<result>1/15 = around 0.066667</result>