Uncle Zhang processed a batch of parts, and 440 parts have been completed, 240 more than planned (2/5). How many parts are there in total?
张叔叔加工一批零件，现已做好了440个，比计划的(2/5)还多240个，这批零件共有多少个．
<gadget id="calculator">440 - 240</gadget>
<output>200</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">200 / (2/5)</gadget>
<output>500</output>

<result>500</result>