The number of trees planted in classes 1-6 of the sixth grade is 50, 42, 47, 45, 44, and 51 respectively. What is the average number of these groups?
六年级1-6班植树棵数分别是50、42、47、45、44、51，这组数的平均数是多少．
<gadget id="calculator">50 + 42 + 47 + 45 + 44 + 51</gadget>
<output>279</output>

<gadget id="calculator">279 / 6</gadget>
<output>93/2 = around 46.5</output>

<result>93/2 = around 46.5</result>