Alright, let's work through 87407400 times 73168266 step by step
87407400 × 73168266 = 73168266 × (87407400)
+ 73168266 × 0 that is equal 0
+ 73168266 × 00 that results in 0
+ 73168266 × 400 giving us 29267306400
+ 73168266 × 7000 that equals 512177862000
+ 73168266 × 00000 giving us 0
+ 73168266 × 400000 giving us 29267306400000
+ 73168266 × 7000000 that equals 512177862000000
+ 73168266 × 80000000 that is equal 5853461280000000

= 6395447893568400
