No problem, we've got 9780 and 7131 to multiply
9780 × 7131 = 7131 × (9780)
+ 7131 × 0 what gives us 0
+ 7131 × 80 that is equal 570480
+ 7131 × 700 giving us 4991700
+ 7131 × 9000 that is equal 64179000

= 69741180
