In the rope skipping competition, Xiaona jumped 105 times in one minute, Xiaona's jumps per minute were 45 times less than Xiaohong's, how many times did Xiaohong jump per minute?
在跳绳比赛中，小娜1分钟跳了105下，小娜每分钟跳的下数比小红跳的2倍少45下，小红每分钟跳多少下？
<gadget id="calculator">105 + 45</gadget>
<output>150</output>

<gadget id="calculator">150 / 2</gadget>
<output>75</output>

<result>75</result>