No problem, we've got 42131324 and 39653620 to multiply
42131324 × 39653620 = 39653620 × (42131324)
+ 39653620 × 4 which equals 158614480
+ 39653620 × 20 producing 793072400
+ 39653620 × 300 that results in 11896086000
+ 39653620 × 1000 yielding 39653620000
+ 39653620 × 30000 which equals 1189608600000
+ 39653620 × 100000 giving us 3965362000000
+ 39653620 × 2000000 that results in 79307240000000
+ 39653620 × 40000000 which equals 1586144800000000

= 1670659511992880
