Please help me to make journal entries

AOL enters into a contract on 1 July 2016 to construct a server on a customer’s premises for a promised consideration of $750 million with a bonus of $50 million if the server is completed within 2 years. At the inception of the contract, AOL expects the costs to be $400 million and concludes that it is highly probable that a significant reversal in the
amount of cumulative revenue recognised will not occur. The contract asset in the trial balance is comprised of contract costs incurred at 30 June 2017 of $149.96 million less a progress billing of $99.96 million to the customer. At 30 June 2017, the total expected costs increase by $60 million. NOL uses an input method based on costs incurred to date
relative to the total expected costs to determine the progress towards completion of its contracts. The accounting policy of AOL is to consider the outcome of contracts insufficiently certain to measure the outcome reliably until they are at least 20% complete.

Please help me to make journal entries, I really don’t understand the sentences.