No problem, we've got 40232973 and 21379874 to multiply
40232973 × 21379874 = 21379874 × (40232973)
+ 21379874 × 3 which equals 64139622
+ 21379874 × 70 producing 1496591180
+ 21379874 × 900 giving us 19241886600
+ 21379874 × 2000 that results in 42759748000
+ 21379874 × 30000 resulting in 641396220000
+ 21379874 × 200000 what gives us 4275974800000
+ 21379874 × 0000000 that is equal 0
+ 21379874 × 40000000 giving us 855194960000000

= 860175893385402
