Originally there were 275 birds in the forest, 526 of them flew in at dusk, and 348 of them flew away at night. How many birds are there in the forest now?
森林里原来有275只鸟，傍晚飞来526只，晚上又飞走了348只．森林里现在有多少只鸟？
<gadget id="calculator">526 - 348</gadget>
<output>178</output>

<gadget id="calculator">275 + 178</gadget>
<output>453</output>

<result>453</result>