Alright, let's work through 37668245 times 19871872 step by step
37668245 × 19871872 = 19871872 × (37668245)
+ 19871872 × 5 that results in 99359360
+ 19871872 × 40 giving us 794874880
+ 19871872 × 200 giving us 3974374400
+ 19871872 × 8000 that is equal 158974976000
+ 19871872 × 60000 that is equal 1192312320000
+ 19871872 × 600000 giving us 11923123200000
+ 19871872 × 7000000 that equals 139103104000000
+ 19871872 × 30000000 giving us 596156160000000

= 748538543104640
