The Young Pioneers cut the grass. The first team cuts 46 kilograms of grass, the second team cuts 54 kilograms of grass, and the third team mows 39 kilograms less than the total amount of grass cut by the first and second teams. How many kilograms of grass does the third team mow?
少先队员割草．第一小队割草46千克，第二小队割草54千克，第三小队比第一、二小队割草总数少39千克，第三小队割草多少千克？
<gadget id="calculator">54 - 39</gadget>
<output>15</output>

<gadget id="calculator">46 + 15</gadget>
<output>61</output>

<result>61</result>