a) a÷19=6rest 8
a= 19×6+8
a=114+8
a=122
b) a÷593=326 rest 59
a= 593×326+59
a=193318+59
a= 193337
a) (17 * 6) +8 = 110
b) = (573 *326) + 59 = 186 857