The engineering team repaired a 900-kilometer-long highway, and repaired the full length (2/3) in 15 days. How many kilometers are repaired on average per day?
工程队修一条长900千米的公路，15天修了全长的(2/3)，平均每天修多少千米？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(2/3) / 15</gadget>
<output>2/45 = around 0.044444</output>

<gadget id="calculator">900 * (2/45)</gadget>
<output>40</output>

<result>40</result>