Alright, let's work through 26997115 times 61851981 step by step
26997115 × 61851981 = 61851981 × (26997115)
+ 61851981 × 5 yielding 309259905
+ 61851981 × 10 yielding 618519810
+ 61851981 × 100 yielding 6185198100
+ 61851981 × 7000 producing 432963867000
+ 61851981 × 90000 which equals 5566678290000
+ 61851981 × 900000 producing 55666782900000
+ 61851981 × 6000000 what gives us 371111886000000
+ 61851981 × 20000000 that is equal 1237039620000000

= 1669825044034815
