1,000,000,000
Functionally, 1 * Y = Y, so the answer is the same as 10^9.
10^9 = 10 * 10 * 10 * 10 * 10 * 10 * 10 * 10 * 10, each repetition of which adds another 0 to the answer.
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1 mile = about 1.61 kilometers Therefore, 1109 kilometers is about 689 miles
1109
1,109 is a prime number. Its only factors are 1 and itself.
1,109 = (1 x 1000) + (1 x 100) + (0 x 10) + (9 x 1)
1509 is written M C I XM C I X is 1109. M D I X is 1509