a and b are natural numbers, it is stipulated: a*b=a*5+b/3, then 8*9=how much.
a、b是自然数，规定：a*b=a*5+b/3，则8*9=多少．
<gadget id="calculator">8 * 5</gadget>
<output>40</output>

<gadget id="calculator">9 / 3</gadget>
<output>3</output>

<gadget id="calculator">40 + 3</gadget>
<output>43</output>

<result>43</result>