No problem, we've got 13686931 and 31010309 to multiply
13686931 × 31010309 = 31010309 × (13686931)
+ 31010309 × 1 that is equal 31010309
+ 31010309 × 30 what gives us 930309270
+ 31010309 × 900 that results in 27909278100
+ 31010309 × 6000 giving us 186061854000
+ 31010309 × 80000 what gives us 2480824720000
+ 31010309 × 600000 that equals 18606185400000
+ 31010309 × 3000000 what gives us 93030927000000
+ 31010309 × 10000000 producing 310103090000000

= 424435959571679
