Alright, let's work through 5256521 times 6404348 step by step
5256521 × 6404348 = 6404348 × (5256521)
+ 6404348 × 1 that results in 6404348
+ 6404348 × 20 that equals 128086960
+ 6404348 × 500 giving us 3202174000
+ 6404348 × 6000 which equals 38426088000
+ 6404348 × 50000 that equals 320217400000
+ 6404348 × 200000 that results in 1280869600000
+ 6404348 × 5000000 that equals 32021740000000

= 33664589753308
