Students practice walking. Walked 36 kilometers on the first day, 47 kilometers on the second day, and 53 kilometers on the third day. How many kilometers did you walk in three days?
同学们进行徒步训练．第一天走了36千米，第二天走了47千米，第三天走了53千米．三天一共走了多少千米？
<gadget id="calculator">36 + 47 + 53</gadget>
<output>136</output>

<result>136</result>