There are 8 ping pong balls of different colors in the box, so that the possibility of drawing a red ping pong ball from the box is (3/8), how many red ping pong balls are there?
盒子里有8个不同颜色的乒乓球，使得从盒子里摸出红乒乓球的可能性是(3/8)，红乒乓球有多少个．
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">8 * (3/8)</gadget>
<output>3</output>

<result>3</result>