Alright, let's work through 46321880 times 85717989 step by step
46321880 × 85717989 = 85717989 × (46321880)
+ 85717989 × 0 which equals 0
+ 85717989 × 80 yielding 6857439120
+ 85717989 × 800 giving us 68574391200
+ 85717989 × 1000 which equals 85717989000
+ 85717989 × 20000 what gives us 1714359780000
+ 85717989 × 300000 that results in 25715396700000
+ 85717989 × 6000000 yielding 514307934000000
+ 85717989 × 40000000 producing 3428719560000000

= 3970618400299320
