No problem, we've got 18741354 and 66671387 to multiply
18741354 × 66671387 = 66671387 × (18741354)
+ 66671387 × 4 which equals 266685548
+ 66671387 × 50 that equals 3333569350
+ 66671387 × 300 giving us 20001416100
+ 66671387 × 1000 what gives us 66671387000
+ 66671387 × 40000 resulting in 2666855480000
+ 66671387 × 700000 that results in 46669970900000
+ 66671387 × 8000000 which equals 533371096000000
+ 66671387 × 10000000 that results in 666713870000000

= 1249512065437998
