The painting group has 4 groups, each with 16 people, and the calligraphy group has 20 people less than the painting group. How many people are there in the calligraphy group?
绘画组有4组，每组16人，书法组比绘画组少20人，书法组有多少人？
<gadget id="calculator">4 * 16</gadget>
<output>64</output>

<gadget id="calculator">64 - 20</gadget>
<output>44</output>

<result>44</result>