Xiaojing and Xiaohong skipped rope together. Xiaojing first jumped for 2 minutes, and then they jumped together for 3 minutes. They jumped 780 times in total. It is known that Xiaojing jumped 12 more times per minute than Xiaohong. Then, Xiaohong How many beats per minute?
小静和小红一起跳绳，小静先跳了2分钟，然后两个人共同跳了3分钟，一共跳了780下，已知小静比小红每分钟多跳了12下，那么，小红每分钟跳多少下？
<gadget id="calculator">2 * 12</gadget>
<output>24</output>

<gadget id="calculator">3 * 12</gadget>
<output>36</output>

<gadget id="calculator">780 - 24 - 36</gadget>
<output>720</output>

<gadget id="calculator">2 + 3 + 3</gadget>
<output>8</output>

<gadget id="calculator">720 / 8</gadget>
<output>90</output>

<result>90</result>