When Li Hong calculated 0.7*(5-2.5), he wrote it as 0.7*5-2.5. How much is the result different from the original?
李红在计算0.7*(5-2.5)时，写成了0.7*5-2.5，结果和原来相差多少．
<gadget id="calculator">5 - 2.5</gadget>
<output>2.5</output>

<gadget id="calculator">0.7 * 2.5</gadget>
<output>1.75</output>

<gadget id="calculator">0.7 * 5</gadget>
<output>3.5</output>

<gadget id="calculator">3.5 - 2.5</gadget>
<output>1</output>

<gadget id="calculator">1.75 - 1</gadget>
<output>0.75</output>

<result>0.75</result>