Check the calculation 472-318=154, what is the wrong calculation method in the following
验算472-318=154，下列验算方法错误的是多少
<gadget id="calculator">472 - 154</gadget>
<output>318</output>

<gadget id="calculator">154 + 318 + 154</gadget>
<output>626</output>

<result>626</result>