The least number is a number to add to 308 to get the first multiple of 19 greater than 308. Multiples of 19 19×1=19 19×2=19+19=38 19×3=38+19=57 19×4=57+19=76 19×5=76+19=95 19×6=95+19=114 19×7=114+19=133 19×8=133+19=152 19×9=152+19=171 19×10=171+19=190 19×11=190+19=209 19×12=209+19=228 19×13=228+19=247 19×14=247+19=266 19×15=266+19=285 19×16=285+19=304 19×17=285+19=323 The least multiple of 19 greater than 308 is 323 Let x= the number to add to 308 308+x=323 x=323−308 x=15 Note: You could start the multiplication of 19 from 19×10 since the result is simply joining zero (0) to the 19 to obtain 190. You could then continue with 19×11,19×12, etc.