12.5 times 0.32 divided by 0.4, then subtract 2.8, what is the difference?
12.5乘0.32除以0.4的商，再减2.8，差是多少？
<gadget id="calculator">0.32 / 0.4</gadget>
<output>0.8</output>

<gadget id="calculator">0.8 * 12.5</gadget>
<output>10</output>

<gadget id="calculator">10 - 2.8</gadget>
<output>7.2</output>

<result>7.2</result>