There are 50 points on a straight line, how many line segments can be counted.
一条直线上共有50个点，可以数出多少条线段．
<gadget id="calculator">49 / 2</gadget>
<output>49/2 = around 24.5</output>

<gadget id="calculator">50 * (49/2)</gadget>
<output>1_225</output>

<result>1_225</result>