Alright, let's work through 97585679 times 80031812 step by step
97585679 × 80031812 = 80031812 × (97585679)
+ 80031812 × 9 which equals 720286308
+ 80031812 × 70 producing 5602226840
+ 80031812 × 600 yielding 48019087200
+ 80031812 × 5000 resulting in 400159060000
+ 80031812 × 80000 that is equal 6402544960000
+ 80031812 × 500000 giving us 40015906000000
+ 80031812 × 7000000 which equals 560222684000000
+ 80031812 × 90000000 that results in 7202863080000000

= 7809958715620348
