Uncle Wang once invested 28,000 yuan in business, and the profit obtained was equivalent to (3/10) of the invested capital. What is the profit of Uncle Wang's business this time?
王叔叔一次做生意，投入资金2.8万元，获得的利润相当于投入资金的(3/10)．王叔叔这次做生意的利润是多少万元？
<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">2.8 * (3/10)</gadget>
<output>0.84</output>

<result>0.84</result>