Alright, let's work through 48398934 times 9038513 step by step
48398934 × 9038513 = 9038513 × (48398934)
+ 9038513 × 4 giving us 36154052
+ 9038513 × 30 that is equal 271155390
+ 9038513 × 900 that equals 8134661700
+ 9038513 × 8000 that results in 72308104000
+ 9038513 × 90000 resulting in 813466170000
+ 9038513 × 300000 that equals 2711553900000
+ 9038513 × 8000000 that results in 72308104000000
+ 9038513 × 40000000 what gives us 361540520000000

= 437454394145142
