No problem, we've got 87703503 and 80113951 to multiply
87703503 × 80113951 = 80113951 × (87703503)
+ 80113951 × 3 which equals 240341853
+ 80113951 × 00 what gives us 0
+ 80113951 × 500 resulting in 40056975500
+ 80113951 × 3000 giving us 240341853000
+ 80113951 × 00000 that equals 0
+ 80113951 × 700000 that equals 56079765700000
+ 80113951 × 7000000 producing 560797657000000
+ 80113951 × 80000000 resulting in 6409116080000000

= 7026274141870353
