What is the quotient of the difference of 10.2 minus 2.5 divided by the product of 20% and 2?
10.2减去2.5的差除以20%与2的积，商是多少？
<gadget id="calculator">10.2 - 2.5</gadget>
<output>7.7</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">2 * (1/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">7.7 / (2/5)</gadget>
<output>19.25</output>

<result>19.25</result>