Xiao Wang did a calculation problem. He should have subtracted 45, but he added 45. How much is the result greater than the correct result?
小王做一道计算题，本应该减去45，可他却加了45，这样所得结果比正确结果大多少
<gadget id="calculator">45 + 45</gadget>
<output>90</output>

<result>90</result>