Alright, let's work through 19755534 times 71507806 step by step
19755534 × 71507806 = 71507806 × (19755534)
+ 71507806 × 4 what gives us 286031224
+ 71507806 × 30 that equals 2145234180
+ 71507806 × 500 what gives us 35753903000
+ 71507806 × 5000 that equals 357539030000
+ 71507806 × 50000 that equals 3575390300000
+ 71507806 × 700000 that results in 50055464200000
+ 71507806 × 9000000 that is equal 643570254000000
+ 71507806 × 10000000 producing 715078060000000

= 1412674892698404
