No problem, we've got 5247 and 1390 to multiply
5247 × 1390 = 1390 × (5247)
+ 1390 × 7 what gives us 9730
+ 1390 × 40 producing 55600
+ 1390 × 200 that results in 278000
+ 1390 × 5000 resulting in 6950000

= 7293330
