No problem, we've got 78329643 and 77277657 to multiply
78329643 × 77277657 = 77277657 × (78329643)
+ 77277657 × 3 which equals 231832971
+ 77277657 × 40 that equals 3091106280
+ 77277657 × 600 which equals 46366594200
+ 77277657 × 9000 what gives us 695498913000
+ 77277657 × 20000 what gives us 1545553140000
+ 77277657 × 300000 that equals 23183297100000
+ 77277657 × 8000000 that results in 618221256000000
+ 77277657 × 70000000 producing 5409435990000000

= 6053131284686451
