Process a batch of parts. After A and B work at the same time for 4 hours, the number of parts made is 10 less than the total (3/4). At this time, A has processed (1/2) of this batch of parts, and B has done 260 pieces, how many parts are there in this batch?
加工一批零件，甲乙二人同时工作4小时后，做的零件个数比总数的(3/4)少10个，这时，甲加工了这批零件的(1/2)，乙做了260个，求这批零件有多少个？
<gadget id="calculator">260 + 10</gadget>
<output>270</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(3/4) - (1/2)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">270 / (1/4)</gadget>
<output>1_080</output>

<result>1_080</result>