Alright, let's work through 39975874 times 98864670 step by step
39975874 × 98864670 = 98864670 × (39975874)
+ 98864670 × 4 which equals 395458680
+ 98864670 × 70 that results in 6920526900
+ 98864670 × 800 which equals 79091736000
+ 98864670 × 5000 giving us 494323350000
+ 98864670 × 70000 giving us 6920526900000
+ 98864670 × 900000 yielding 88978203000000
+ 98864670 × 9000000 that equals 889782030000000
+ 98864670 × 30000000 which equals 2965940100000000

= 3952201590971580
