Xiaojian and Xiaolei did sit-ups. Xiaojian did it for 3 minutes first, and then they each did it for 5 minutes. They did 136 sit-ups in total. It is known that Xiaojian does 4 more times per minute than Xiaolei, so how many times does Xiaojian do more than Xiaolei?
小建和小雷做仰卧起坐，小建先做了3分钟，然后两人各做了5分钟，一共做仰卧起坐136次．已知每分钟小建比小雷平均多做4次，那么小建比小雷多做了多少次？
<gadget id="calculator">3 + 5</gadget>
<output>8</output>

<gadget id="calculator">4 * 8</gadget>
<output>32</output>

<gadget id="calculator">136 - 32</gadget>
<output>104</output>

<gadget id="calculator">3 + 5 + 5</gadget>
<output>13</output>

<gadget id="calculator">104 / 13</gadget>
<output>8</output>

<gadget id="calculator">8 + 4</gadget>
<output>12</output>

<gadget id="calculator">12 * 8</gadget>
<output>96</output>

<gadget id="calculator">8 * 5</gadget>
<output>40</output>

<gadget id="calculator">96 - 40</gadget>
<output>56</output>

<result>56</result>