No problem, we've got 55285912 and 15629217 to multiply
55285912 × 15629217 = 15629217 × (55285912)
+ 15629217 × 2 giving us 31258434
+ 15629217 × 10 which equals 156292170
+ 15629217 × 900 that equals 14066295300
+ 15629217 × 5000 resulting in 78146085000
+ 15629217 × 80000 giving us 1250337360000
+ 15629217 × 200000 giving us 3125843400000
+ 15629217 × 5000000 giving us 78146085000000
+ 15629217 × 50000000 resulting in 781460850000000

= 864075515690904
