Alright, let's work through 20160408 times 63386212 step by step
20160408 × 63386212 = 63386212 × (20160408)
+ 63386212 × 8 that is equal 507089696
+ 63386212 × 00 that equals 0
+ 63386212 × 400 that is equal 25354484800
+ 63386212 × 0000 which equals 0
+ 63386212 × 60000 yielding 3803172720000
+ 63386212 × 100000 giving us 6338621200000
+ 63386212 × 0000000 what gives us 0
+ 63386212 × 20000000 what gives us 1267724240000000

= 1277891895494496
