Alright, let's work through 66431897 times 74874967 step by step
66431897 × 74874967 = 74874967 × (66431897)
+ 74874967 × 7 what gives us 524124769
+ 74874967 × 90 giving us 6738747030
+ 74874967 × 800 that is equal 59899973600
+ 74874967 × 1000 what gives us 74874967000
+ 74874967 × 30000 that results in 2246249010000
+ 74874967 × 400000 which equals 29949986800000
+ 74874967 × 6000000 what gives us 449249802000000
+ 74874967 × 60000000 which equals 4492498020000000

= 4974086095622399
