Alright, let's work through 39396479 times 13513707 step by step
39396479 × 13513707 = 13513707 × (39396479)
+ 13513707 × 9 what gives us 121623363
+ 13513707 × 70 producing 945959490
+ 13513707 × 400 resulting in 5405482800
+ 13513707 × 6000 producing 81082242000
+ 13513707 × 90000 that equals 1216233630000
+ 13513707 × 300000 that results in 4054112100000
+ 13513707 × 9000000 giving us 121623363000000
+ 13513707 × 30000000 producing 405411210000000

= 532392474037653
