A factory produces a batch of generators, originally planned to produce 200 units per day, but actually produced 50 more units per day than the original plan, so the task was completed 10 days ahead of schedule. How many motors are there in this wholesale?
某工厂生产一批发电机，原计划每天生产200台，实际每天比原计划多生产50台，这样就提前10天完成任务．这批发电机有多少台？
<gadget id="calculator">200 + 50</gadget>
<output>250</output>

<gadget id="calculator">10 / 50</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">200 * (1/5)</gadget>
<output>40</output>

<gadget id="calculator">250 * 40</gadget>
<output>10_000</output>

<result>10_000</result>