rope is 598 meters, 172 meters are used for the first time, and 203 meters are used for the second time, how many meters are left?
一根绳子598米，第一次用去172米，第二次用去203米，还剩下多少米．
<gadget id="calculator">598 - 172 - 203</gadget>
<output>223</output>

<result>223</result>