A, B, and C work together to make a batch of machine parts. The number of parts made by A is (1/2) that of B and C, and the number of parts made by B is (1/3) that of A and C. ), C made 450 parts, how many parts are there in total?
甲、乙、丙三人合做一批机器零件，甲做零件的个数是乙、丙两人的(1/2)，乙做零件的个数是甲、丙两人的(1/3)，丙作了450个，这批零件一共有多少个？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/3) - (1/4)</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">450 / (5/12)</gadget>
<output>1_080</output>

<result>1_080</result>