It could be: 1234567890 = 1
zero
1234567890 + 4563217890 = 5797785780
456789 * 1234567890 = 5.63937032 × 1014
So for example if you wanted to write 4 in words it would be four.
1.5833
It could be: 1234567890 = 1
1234567890
2469135780
zero
1.52415788 × 1018
1234567890-1234567856 = 34
1 plus 1234567890 is 1234567891
1234567890+9876543210=11,111,111,100
1234567890 + 1098765432 = 2333333322
4000 + 1234567890 = 1234571890
1234567890 + 4563217890 = 5797785780