No problem, we've got 5309 and 2100 to multiply
5309 × 2100 = 2100 × (5309)
+ 2100 × 9 what gives us 18900
+ 2100 × 00 giving us 0
+ 2100 × 300 producing 630000
+ 2100 × 5000 yielding 10500000

= 11148900
