We have learned the four operations of +, -, *, /, and now it is stipulated that "#" is a new operation, assuming a and b are two numbers. Regulations: a#b=(ab)*(a+b), then 8#(4#3)=how much.
我们学过+、-、*、/这四种运算，现在规定"#"是一种新的运算，设a、b是两个数．规定：a#b=(a-b)*(a+b)，那么8#(4#3)=多少．
<gadget id="calculator">4 - 3</gadget>
<output>1</output>

<gadget id="calculator">4 + 3</gadget>
<output>7</output>

<gadget id="calculator">1 * 7</gadget>
<output>7</output>

<gadget id="calculator">8 - 7</gadget>
<output>1</output>

<gadget id="calculator">8 + 7</gadget>
<output>15</output>

<gadget id="calculator">1 * 15</gadget>
<output>15</output>

<result>15</result>