The swimming pool is 50 meters long. Xiao Gang swam 10 times in 15 days. How many kilometers did he swim in total?
游泳池长50米，15天小刚游了10个来回，他共游了多少千米？
<gadget id="calculator">50 * 2 * 10</gadget>
<output>1_000</output>

<gadget id="calculator">1_000 / 1_000</gadget>
<output>1</output>

<result>1</result>