Alright, let's work through 21310282 times 97312789 step by step
21310282 × 97312789 = 97312789 × (21310282)
+ 97312789 × 2 yielding 194625578
+ 97312789 × 80 what gives us 7785023120
+ 97312789 × 200 giving us 19462557800
+ 97312789 × 0000 that results in 0
+ 97312789 × 10000 what gives us 973127890000
+ 97312789 × 300000 that is equal 29193836700000
+ 97312789 × 1000000 what gives us 97312789000000
+ 97312789 × 20000000 that is equal 1946255780000000

= 2073762975796498
