No problem, we've got 61379487 and 88647517 to multiply
61379487 × 88647517 = 88647517 × (61379487)
+ 88647517 × 7 that is equal 620532619
+ 88647517 × 80 yielding 7091801360
+ 88647517 × 400 that equals 35459006800
+ 88647517 × 9000 resulting in 797827653000
+ 88647517 × 70000 resulting in 6205326190000
+ 88647517 × 300000 what gives us 26594255100000
+ 88647517 × 1000000 that results in 88647517000000
+ 88647517 × 60000000 giving us 5318851020000000

= 5441139117283779
