No problem, we've got 78354440 and 98771978 to multiply
78354440 × 98771978 = 98771978 × (78354440)
+ 98771978 × 0 producing 0
+ 98771978 × 40 what gives us 3950879120
+ 98771978 × 400 resulting in 39508791200
+ 98771978 × 4000 which equals 395087912000
+ 98771978 × 50000 giving us 4938598900000
+ 98771978 × 300000 that equals 29631593400000
+ 98771978 × 8000000 yielding 790175824000000
+ 98771978 × 70000000 giving us 6914038460000000

= 7739223023882320
