819+153=(819+1)+(152)=820+152=972305+239=(305+5)+(234)=310+234=544893+98=(893+3)+(95)=896+95=991325+3997=(325+75)+(3922)=4000+3922=7922256+98=(256+4)+(94)=260+94=354999+536=(999+1)+(535)=1000+535=15351999+48=(1999+1)+(47)=2000+47=2047423+4999=(423+1)+(4998)=424+4998=5422
819+153=(819+1)+(152)=820+152=972
305+239=(305+5)+(234)=310+234=544
893+98=(893+3)+(95)=896+95=991
325+3997=(325+75)+(3922)=4000+3922=7922
256+98=(256+4)+(94)=260+94=354
999+536=(999+1)+(535)=1000+535=1535
1999+48=(1999+1)+(47)=2000+47=2047
423+4999=(423+1)+(4998)=424+4998=5422