No problem, we've got 79398476 and 21503485 to multiply
79398476 × 21503485 = 21503485 × (79398476)
+ 21503485 × 6 what gives us 129020910
+ 21503485 × 70 that equals 1505243950
+ 21503485 × 400 that equals 8601394000
+ 21503485 × 8000 what gives us 172027880000
+ 21503485 × 90000 that is equal 1935313650000
+ 21503485 × 300000 that is equal 6451045500000
+ 21503485 × 9000000 that results in 193531365000000
+ 21503485 × 70000000 yielding 1505243950000000

= 1707343937688860
