Use (x) to represent the integer part less than x, for example (13.52)=13, if x=8.28, then (x)+(2x)+(3x)+(4x)=how much.
用(x)表示小于x的整数部分，例如(13.52)=13，若x=8.28，则(x)+(2x)+(3x)+(4x)=多少．
<gadget id="calculator">8 + 16 + 24 + 33</gadget>
<output>81</output>

<result>81</result>