product is sold at a 10% discount, saving 8.4 yuan from the original price. What is the current price of this product?
一件商品打九折销售，比原价节省了8.4元，这款商品现价多少元．
<gadget id="calculator">90 / 100</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">1 - (9/10)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">8.4 / (1/10)</gadget>
<output>84</output>

<gadget id="calculator">84 - 8.4</gadget>
<output>75.6</output>

<result>75.6</result>