Alright, let's work through 61299640 times 85413509 step by step
61299640 × 85413509 = 85413509 × (61299640)
+ 85413509 × 0 giving us 0
+ 85413509 × 40 that is equal 3416540360
+ 85413509 × 600 that equals 51248105400
+ 85413509 × 9000 which equals 768721581000
+ 85413509 × 90000 that results in 7687215810000
+ 85413509 × 200000 that is equal 17082701800000
+ 85413509 × 1000000 resulting in 85413509000000
+ 85413509 × 60000000 which equals 5124810540000000

= 5235817352836760
