The sum of two numbers is 445. If one of the addends is increased by 58 and the other is decreased by 76, what is the sum?
两个数相加的和是445，如果其中一个加数增加58，另一个加数减少76，这时和是多少．
<gadget id="calculator">58 - 76</gadget>
<output>-18</output>

<gadget id="calculator">445 + (-18)</gadget>
<output>427</output>

<result>427</result>