(18976+18973+18979+18971+18981+18975+18977)/7=how much.
(18976+18973+18979+18971+18981+18975+18977)/7=多少．
<gadget id="calculator">18_976 + 18_973 + 18_979 + 18_971 + 18_981 + 18_975 + 18_977</gadget>
<output>132_832</output>

<gadget id="calculator">132_832 / 7</gadget>
<output>18_976</output>

<result>18_976</result>