Xiaoxiao mistook 4.02 for 402 when doing a decimal addition, and the result was 455.5. What is the correct result?
笑笑在做一道小数加法时，错把4.02看成了402，结果是455.5．问正确的结果是多少？
<gadget id="calculator">455.5 - 402</gadget>
<output>53.5</output>

<gadget id="calculator">4.02 + 53.5</gadget>
<output>57.52</output>

<result>57.52</result>