a envelop weight 8.2 gm, if 800 of these envelop are sent with an advertisement mail. how much wieght? Choose one.
A) 6.56 kg  B) 6.8 kg  C) 6.7 kg  D) 6.9 kg  E) 7.8 kg
<gadget id="calculator">8.2 * 800</gadget>
<output>6_560</output>

<gadget id="calculator">6_560 / 1_000</gadget>
<output>164/25 = around 6.56</output>

<result>A</result>
a envelop weight 8.2 gm, if 800 of these envelop are sent with an advertisement mail. how much wieght?
divide(multiply(8.2, 800), const_1000)
"800 * 8.2 6560.0 gm 6.56 kg answer : a"