revenu

Sir
Help please
On 1 October, 2011, the first day of the accounting period, the company sold one of its products for $10 million and included this amount
in revenue. As part of the sale agreement, the company is committed to the ongoing servicing of this product until 30 September, 2014
(i.e. three years from the date of sale). The value of this service has been included in the selling price of $10 million. The estimated cost to
the company of the servicing is $600,000 per annum and the normal gross profit margin on this type of servicing is 25%.

I am having 10 000 x 75%) – (600 x3)= 5700
5700/3 x2 =3800
Dr Rev
Cr Deferred income for 3 800

but the answer is 1600