When a=3, b=5, what is the value of 7*(a+1)/b
当a=3，b=5时，7*(a+1)/b的值是多少
<gadget id="calculator">3 + 1</gadget>
<output>4</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">7 * (4/5)</gadget>
<output>28/5 = around 5.6</output>

<result>28/5 = around 5.6</result>