When the little sloppy was doing a subtraction problem, he regarded the 2 in the subtraction tens place as 5, and the result was a difference of 342. What is the correct difference?
小马虎在做一道减法题时，把减数十位上的2看成了5，结果得到的差是342，正确的差是多少？
<gadget id="calculator">5 - 2</gadget>
<output>3</output>

<gadget id="calculator">3 * 10</gadget>
<output>30</output>

<gadget id="calculator">342 + 30</gadget>
<output>372</output>

<result>372</result>