Alright, let's work through 31702909 times 10287402 step by step
31702909 × 10287402 = 10287402 × (31702909)
+ 10287402 × 9 that results in 92586618
+ 10287402 × 00 that equals 0
+ 10287402 × 900 that equals 9258661800
+ 10287402 × 2000 yielding 20574804000
+ 10287402 × 00000 that results in 0
+ 10287402 × 700000 resulting in 7201181400000
+ 10287402 × 1000000 producing 10287402000000
+ 10287402 × 30000000 what gives us 308622060000000

= 326140569452418
