There are 100 basketballs, volleyballs, and footballs, and the number of basketballs is twice that of volleyballs. If there are 8 more volleyballs than footballs, how many basketballs are there?
篮球、排球、足球共100个，其中篮球是排球的2倍．排球比足球多8个，则篮球有多少个．
<gadget id="calculator">8 + 100</gadget>
<output>108</output>

<gadget id="calculator">1 + 2 + 1</gadget>
<output>4</output>

<gadget id="calculator">108 / 4</gadget>
<output>27</output>

<gadget id="calculator">2 * 27</gadget>
<output>54</output>

<result>54</result>