Simplify the following text for a Grade 4 native English-speaking person.
Original: Under the Dawes Plan , Germany paid only 1 billion marks in 1924 , and then increasing large sums for the next three years , until the total was to rise to 2 and quarter billion by 1927 . After 1927 , Germany was to make an annual payment of 2 and half billion marks .
Simplified: Under this new plan , Germany paid 1 billion marks in 1924 and reached the total of 2.25 billion by 1927 .