When Xiao Ming calculated (28+22)*□, he missed the parentheses, and the calculated result was 358. When he checked, he found an error and recalculated. What should be the correct result of his calculation.
小明在计算(28+22)*□时，漏看了小括号，算出的结果是358，检查时发现了错误，又重新计算．他算出的正确结果应该是多少．
<gadget id="calculator">28 + 22</gadget>
<output>50</output>

<gadget id="calculator">358 - 28</gadget>
<output>330</output>

<gadget id="calculator">330 / 22</gadget>
<output>15</output>

<gadget id="calculator">50 * 15</gadget>
<output>750</output>

<result>750</result>