No problem, we've got 20970914 and 33639257 to multiply
20970914 × 33639257 = 33639257 × (20970914)
+ 33639257 × 4 resulting in 134557028
+ 33639257 × 10 what gives us 336392570
+ 33639257 × 900 producing 30275331300
+ 33639257 × 0000 resulting in 0
+ 33639257 × 70000 producing 2354747990000
+ 33639257 × 900000 producing 30275331300000
+ 33639257 × 0000000 that equals 0
+ 33639257 × 20000000 resulting in 672785140000000

= 705445965570898
