No problem, we've got 7771 and 1763 to multiply
7771 × 1763 = 1763 × (7771)
+ 1763 × 1 what gives us 1763
+ 1763 × 70 that is equal 123410
+ 1763 × 700 that is equal 1234100
+ 1763 × 7000 which equals 12341000

= 13700273
