A district used 200 kWh of electricity in September, which was 50 kWh less than that in August. How many kWh of electricity will be shared between August and September?
某区九月份用电200度，比八月份节约用了50度，八月份和九月份一共用电多少度？
<gadget id="calculator">200 - 50</gadget>
<output>150</output>

<gadget id="calculator">150 + 200</gadget>
<output>350</output>

<result>350</result>