Alright, let's work through 8559 times 7803 step by step
8559 × 7803 = 7803 × (8559)
+ 7803 × 9 that results in 70227
+ 7803 × 50 that equals 390150
+ 7803 × 500 which equals 3901500
+ 7803 × 8000 which equals 62424000

= 66785877
