123456789
  -123456789
  123456789
123456789
    -1234567890
-1234567890
    123456789.1234
  123456789.1234
    -987654321
    987654321
-987654321
987654321
  -987654321.2345
  987654321.7654
  987654321.765400
    -987654321.9876