a garrison of 500 men has provisions for 20 days. at the end of 14 days, a reinforcement arrives, and it is now found that the provisions will last only for 3 days more. what is the reinforcement?	Choices:
A) 500
B) 1000
C) 1500
D) 3000
E) 2000
<gadget id="calculator">500 * 20</gadget>
<output>10_000</output>

<gadget id="calculator">500 * 14</gadget>
<output>7_000</output>

<gadget id="calculator">10_000 - 7_000</gadget>
<output>3_000</output>

<gadget id="calculator">3_000 / 3</gadget>
<output>1_000</output>

<gadget id="calculator">1_000 - 500</gadget>
<output>500</output>

<result>A</result>
a garrison of 500 men has provisions for 20 days. at the end of 14 days, a reinforcement arrives, and it is now found that the provisions will last only for 3 days more. what is the reinforcement?
subtract(divide(subtract(multiply(500, 20), multiply(500, 14)), 3), 500)
"500 - - - - 20 500 - - - - 6 x - - - - - 3 x * 3 = 500 * 6 x = 1000 500 - - - - - - - 500 answer : a"