A kind of electronic cat toy, the original price (2/5) is equal to the current price (3/4), and now it is 8.4 yuan cheaper than the original one. What is the current price of this electronic cat?
一种电子猫的玩具，原来价格的(2/5)与现在价格的(3/4)相等，现在比原来每个便宜8.4元，这种电子猫现在的价格的多少元．
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">8.4 * (2/5)</gadget>
<output>3.36</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(3/4) - (2/5)</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">3.36 / (7/20)</gadget>
<output>9.6</output>

<result>9.6</result>