No problem, we've got 40425557 and 7842936 to multiply
40425557 × 7842936 = 7842936 × (40425557)
+ 7842936 × 7 giving us 54900552
+ 7842936 × 50 giving us 392146800
+ 7842936 × 500 which equals 3921468000
+ 7842936 × 5000 producing 39214680000
+ 7842936 × 20000 giving us 156858720000
+ 7842936 × 400000 that results in 3137174400000
+ 7842936 × 0000000 that results in 0
+ 7842936 × 40000000 resulting in 313717440000000

= 317055056315352
