In Spanish the number 100 CIEN, so When you want to create numbers formed by 100, you say "CIENTO" (in plural you say: CIENTOS)
and the number
For example, if you want say "114", you will need to say: CIENTO (100) catorce (14) = CIENTO CATORCE (114)
or 356 = (TRES (3) CIENTOS (100) 3x100= 300) (CINCUENTA (50)) Y ( SEIS (6)= TRECIENTOS CINCUENTA Y SEIS.
999 = (NOVE (FOR THE "NUEVE" (9) CIENTOS (100) 9X100= 900) (NOVENTA (90) Y (NUEVE (9))= NOVECIENTOS NOVENTA Y NUEVE
and in spanish the numer 1,000 is "MIL", so, it's the same
1989 ( MIL (1000)) (NOVECIENTOS (900)) (OCHENTA (80)) Y (NUEVE (9))= MIL NOVECIENTOS OCHENTA Y NUEVE.
4576 (CUATRO (4) MIL (1000) 4X1000= 4000)) (QUIN (5) IENTOS (100) 5X100= 500) (SETENTA (70)) Y (SEIS (6))= CUATRO MIL QUINIENTOS SETENTA Y SEIS.