Let's calculate 88421324 x 64004123
88421324 × 64004123 = 64004123 × (88421324)
+ 64004123 × 4 producing 256016492
+ 64004123 × 20 giving us 1280082460
+ 64004123 × 300 resulting in 19201236900
+ 64004123 × 1000 giving us 64004123000
+ 64004123 × 20000 yielding 1280082460000
+ 64004123 × 400000 giving us 25601649200000
+ 64004123 × 8000000 which equals 512032984000000
+ 64004123 × 80000000 giving us 5120329840000000

= 5659329297118852
