There are 5,400 parts in a batch, A has already made 1,080, and the rest will be divided between B and C at a ratio of 4:5. How many parts should C make?
一批零件有5400个，甲已经做了1080个，剩下的按4：5分给乙和丙完成，丙要做多少个零件？
<gadget id="calculator">5_400 - 1_080</gadget>
<output>4_320</output>

<gadget id="calculator">4 + 5</gadget>
<output>9</output>

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

<gadget id="calculator">4_320 * (5/9)</gadget>
<output>2_400</output>

<result>2_400</result>