No problem, we've got 83820060 and 47041636 to multiply
83820060 × 47041636 = 47041636 × (83820060)
+ 47041636 × 0 giving us 0
+ 47041636 × 60 which equals 2822498160
+ 47041636 × 000 which equals 0
+ 47041636 × 0000 what gives us 0
+ 47041636 × 20000 yielding 940832720000
+ 47041636 × 800000 giving us 37633308800000
+ 47041636 × 3000000 that equals 141124908000000
+ 47041636 × 80000000 producing 3763330880000000

= 3943032752018160
