Put 235 matches into three boxes, so that (3/4) of the number of matches in the first box is equal to (1/3) of the second box, and (1/2) of the second box is equal to that of the third box (3/7), how many matches are in the second box?
把235根火柴放进三个盒里，使第一盒火柴的根数的(3/4)等于第二盒的(1/3)，第二盒的(1/2)等于第三盒的(3/7)，则第二个盒中有多少根火柴？
<gadget id="calculator">8 + 18 + 21</gadget>
<output>47</output>

<gadget id="calculator">18 / 47</gadget>
<output>18/47 = around 0.382979</output>

<gadget id="calculator">235 * (18/47)</gadget>
<output>90</output>

<result>90</result>