When Xiao Fang was doing an addition problem, he mistakenly took the 2 in the tens place as 7, and the 5 in the hundreds place as 8, and the result was 950. What should be the correct number?
小方在做一道加法题时，错把一个加数十位上的2当成7，把百位上的5当成8，得数是950．正确的得数应该是多少？
<gadget id="calculator">950 - 350</gadget>
<output>600</output>

<result>600</result>