Alright, let's work through 87673000 times 78775503 step by step
87673000 × 78775503 = 78775503 × (87673000)
+ 78775503 × 0 resulting in 0
+ 78775503 × 00 giving us 0
+ 78775503 × 000 yielding 0
+ 78775503 × 3000 that results in 236326509000
+ 78775503 × 70000 that is equal 5514285210000
+ 78775503 × 600000 yielding 47265301800000
+ 78775503 × 7000000 that is equal 551428521000000
+ 78775503 × 80000000 giving us 6302040240000000

= 6906484674519000
