In a subtraction problem, Xiao Le mistakenly copied the subtrahend 46 into 64, and the calculated difference was 18. What should be the correct number?
一道减法题，小乐误把减数46抄成64，算得的差是18．正确的得数应该是多少？
<gadget id="calculator">18 - 46</gadget>
<output>-28</output>

<gadget id="calculator">64 + (-28)</gadget>
<output>36</output>

<result>36</result>