Alright, let's work through 12044274 times 64436144 step by step
12044274 × 64436144 = 64436144 × (12044274)
+ 64436144 × 4 what gives us 257744576
+ 64436144 × 70 giving us 4510530080
+ 64436144 × 200 that is equal 12887228800
+ 64436144 × 4000 giving us 257744576000
+ 64436144 × 40000 giving us 2577445760000
+ 64436144 × 000000 giving us 0
+ 64436144 × 2000000 that is equal 128872288000000
+ 64436144 × 10000000 yielding 644361440000000

= 776086573839456
