No problem, we've got 42139612 and 19882918 to multiply
42139612 × 19882918 = 19882918 × (42139612)
+ 19882918 × 2 giving us 39765836
+ 19882918 × 10 that is equal 198829180
+ 19882918 × 600 that equals 11929750800
+ 19882918 × 9000 that results in 178946262000
+ 19882918 × 30000 giving us 596487540000
+ 19882918 × 100000 yielding 1988291800000
+ 19882918 × 2000000 which equals 39765836000000
+ 19882918 × 40000000 giving us 795316720000000

= 837858449947816
