Alright, let's work through 81748324 times 91975510 step by step
81748324 × 91975510 = 91975510 × (81748324)
+ 91975510 × 4 resulting in 367902040
+ 91975510 × 20 what gives us 1839510200
+ 91975510 × 300 which equals 27592653000
+ 91975510 × 8000 giving us 735804080000
+ 91975510 × 40000 resulting in 3679020400000
+ 91975510 × 700000 that results in 64382857000000
+ 91975510 × 1000000 that equals 91975510000000
+ 91975510 × 80000000 producing 7358040800000000

= 7518843791545240
