No problem, we've got 28520854 and 48724734 to multiply
28520854 × 48724734 = 48724734 × (28520854)
+ 48724734 × 4 what gives us 194898936
+ 48724734 × 50 yielding 2436236700
+ 48724734 × 800 producing 38979787200
+ 48724734 × 0000 yielding 0
+ 48724734 × 20000 that equals 974494680000
+ 48724734 × 500000 that results in 24362367000000
+ 48724734 × 8000000 giving us 389797872000000
+ 48724734 × 20000000 what gives us 974494680000000

= 1389671024602836
