There is a 1,000-meter-long street in Hongsibao. Trees are planted on both sides of the street (both ends are loaded). A tree is planted every 20 meters. How many trees can be loaded in total?
红寺堡有一条长1000米的街道，在街道两边栽树(两端都载)，每隔20米栽一棵树，一共可以载多少棵？
<gadget id="calculator">1_000 / 20</gadget>
<output>50</output>

<gadget id="calculator">50 + 1</gadget>
<output>51</output>

<gadget id="calculator">51 * 2</gadget>
<output>102</output>

<result>102</result>