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Fun with integers

1000000000 plus 200000000 is 1200000000
2000000000 plus 200000000 is -2094967296

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Fun with long integers

7000000000000000000 plus 2000000000000000000 is 9000000000000000000
8000000000000000000 plus 2000000000000000000 is -8446744073709551616

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Fun with single-precision floating-point

1.0E7 plus 1 is 1.0000001E7
2.0E7 plus 1 is 2.0E7
1.0E7 plus 2 is 1.0000002E7
2.0E7 plus 2 is 2.0000002E7
1.0E7 plus 3 is 1.0000003E7
2.0E7 plus 3 is 2.0000004E7
1.0E7 plus 4 is 1.0000004E7
2.0E7 plus 4 is 2.0000004E7
1.0E7 plus 5 is 1.0000005E7
2.0E7 plus 5 is 2.0000004E7
1.0E7 plus 6 is 1.0000006E7
2.0E7 plus 6 is 2.0000006E7
1.0E7 plus 7 is 1.0000007E7
2.0E7 plus 7 is 2.0000008E7
1.0E7 plus 8 is 1.0000008E7
2.0E7 plus 8 is 2.0000008E7
1.0E7 plus 9 is 1.0000009E7
2.0E7 plus 9 is 2.0000008E7

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Fun with double-precision floating-point

1.0E15 plus 1 is 1.000000000000001E15
1.0E16 plus 1 is 1.0E16
1.0E15 plus 2 is 1.000000000000002E15
1.0E16 plus 2 is 1.0000000000000002E16
1.0E15 plus 3 is 1.000000000000003E15
1.0E16 plus 3 is 1.0000000000000004E16
1.0E15 plus 4 is 1.000000000000004E15
1.0E16 plus 4 is 1.0000000000000004E16
1.0E15 plus 5 is 1.000000000000005E15
1.0E16 plus 5 is 1.0000000000000004E16
1.0E15 plus 6 is 1.000000000000006E15
1.0E16 plus 6 is 1.0000000000000006E16
1.0E15 plus 7 is 1.000000000000007E15
1.0E16 plus 7 is 1.0000000000000008E16
1.0E15 plus 8 is 1.000000000000008E15
1.0E16 plus 8 is 1.0000000000000008E16
1.0E15 plus 9 is 1.000000000000009E15
1.0E16 plus 9 is 1.0000000000000008E16