No problem, we've got 7109 and 5760 to multiply
7109 × 5760 = 5760 × (7109)
+ 5760 × 9 that is equal 51840
+ 5760 × 00 what gives us 0
+ 5760 × 100 that is equal 576000
+ 5760 × 7000 which equals 40320000

= 40947840
