Lianhua Supermarket has 450 boxes of prince biscuits, and sold 50 boxes more than half of it. How many boxes are left?
联华超市有王子饼干450箱，卖出的比它的一半还多50箱，剩下多少箱？
<gadget id="calculator">450 / 2</gadget>
<output>225</output>

<gadget id="calculator">225 + 50</gadget>
<output>275</output>

<gadget id="calculator">450 - 275</gadget>
<output>175</output>

<result>175</result>