For a batch of parts, A alone takes 8 hours to make, and B alone takes 10 hours to make. After two people work together for 6 hours, the excess is 700 parts. How many do you plan to make?
一批零件，甲单独做要8小时，乙单独做要10小时，两人合做6小时后，比计划超额700个．计划做多少个？
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(1/8) + (1/10)</gadget>
<output>9/40 = around 0.225</output>

<gadget id="calculator">1 / (9/40)</gadget>
<output>40/9 = around 4.444444</output>

<gadget id="calculator">6 - (40/9)</gadget>
<output>14/9 = around 1.555556</output>

<gadget id="calculator">700 / (14/9)</gadget>
<output>450</output>

<gadget id="calculator">450 * (40/9)</gadget>
<output>2_000</output>

<result>2_000</result>