No problem, we've got 1979 and 1973 to multiply
1979 × 1973 = 1973 × (1979)
+ 1973 × 9 yielding 17757
+ 1973 × 70 what gives us 138110
+ 1973 × 900 that is equal 1775700
+ 1973 × 1000 what gives us 1973000

= 3904567
