No problem, we've got 21298427 and 68220027 to multiply
21298427 × 68220027 = 68220027 × (21298427)
+ 68220027 × 7 resulting in 477540189
+ 68220027 × 20 that equals 1364400540
+ 68220027 × 400 producing 27288010800
+ 68220027 × 8000 that is equal 545760216000
+ 68220027 × 90000 what gives us 6139802430000
+ 68220027 × 200000 what gives us 13644005400000
+ 68220027 × 1000000 that is equal 68220027000000
+ 68220027 × 20000000 which equals 1364400540000000

= 1452979264997529
