No problem, we've got 7788 and 5420 to multiply
7788 × 5420 = 5420 × (7788)
+ 5420 × 8 giving us 43360
+ 5420 × 80 yielding 433600
+ 5420 × 700 that equals 3794000
+ 5420 × 7000 that results in 37940000

= 42210960
