When a=4, b=0.5, and c=8, what is the value of ab+c?
当a=4，b=0.5，c=8时，那么，ab+c的值是多少．
<gadget id="calculator">4 * 0.5</gadget>
<output>2</output>

<gadget id="calculator">2 + 8</gadget>
<output>10</output>

<result>10</result>