There are 8 balls in the pocket, if the probability of touching a red ball is (3/4), how many red balls should be placed in the pocket.
口袋里有8个球，如果要使摸到红球的可能性是(3/4)，口袋里应放多少个红球．
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">8 * (3/4)</gadget>
<output>6</output>

<result>6</result>