Qinglong No. 4 Elementary School organizes interest group activities. There are 75 people in the calligraphy group, and the dance group is four times that of the calligraphy group. How many people are there in the dance group and the calligraphy group?
青龙四小开展兴趣小组活动，书法小组有75人，舞蹈小组是书法小组的4倍，舞蹈小组和书法小组共有多少人？
<gadget id="calculator">75 * 4</gadget>
<output>300</output>

<gadget id="calculator">300 + 75</gadget>
<output>375</output>

<result>375</result>