When Xiaogang calculated (4+15)*15, he miscalculated as 4+15*15, how much difference between the result he calculated and the correct result
小刚在计算(4+15)*15时，错算成4+15*15，他算出的结果与正确结果相差多少
<gadget id="calculator">4 + 15</gadget>
<output>19</output>

<gadget id="calculator">19 * 15</gadget>
<output>285</output>

<gadget id="calculator">15 * 15</gadget>
<output>225</output>

<gadget id="calculator">4 + 225</gadget>
<output>229</output>

<gadget id="calculator">285 - 229</gadget>
<output>56</output>

<result>56</result>