No problem, we've got 5188 and 9907 to multiply
5188 × 9907 = 9907 × (5188)
+ 9907 × 8 that is equal 79256
+ 9907 × 80 that is equal 792560
+ 9907 × 100 what gives us 990700
+ 9907 × 5000 that equals 49535000

= 51397516
