The weights of the four students in the third grade are as follows: 55 kg, 53 kg, 46 kg, 58 kg, what is their average weight in kg?
三年级四名同学的体重如下：55千克，53千克，46千克，58千克，他们的平均体重是多少千克？
<gadget id="calculator">55 + 53 + 46 + 58</gadget>
<output>212</output>

<gadget id="calculator">212 / 4</gadget>
<output>53</output>

<result>53</result>