Alright, let's work through 87798225 times 63969475 step by step
87798225 × 63969475 = 63969475 × (87798225)
+ 63969475 × 5 that results in 319847375
+ 63969475 × 20 producing 1279389500
+ 63969475 × 200 what gives us 12793895000
+ 63969475 × 8000 giving us 511755800000
+ 63969475 × 90000 producing 5757252750000
+ 63969475 × 700000 giving us 44778632500000
+ 63969475 × 7000000 which equals 447786325000000
+ 63969475 × 80000000 that equals 5117558000000000

= 5616406359181875
