Alright, let's work through 52021035 times 86771382 step by step
52021035 × 86771382 = 86771382 × (52021035)
+ 86771382 × 5 giving us 433856910
+ 86771382 × 30 which equals 2603141460
+ 86771382 × 000 resulting in 0
+ 86771382 × 1000 yielding 86771382000
+ 86771382 × 20000 resulting in 1735427640000
+ 86771382 × 000000 which equals 0
+ 86771382 × 2000000 yielding 173542764000000
+ 86771382 × 50000000 that results in 4338569100000000

= 4513937100020370
