Alright, let's work through 20370973 times 61003768 step by step
20370973 × 61003768 = 61003768 × (20370973)
+ 61003768 × 3 yielding 183011304
+ 61003768 × 70 what gives us 4270263760
+ 61003768 × 900 what gives us 54903391200
+ 61003768 × 0000 resulting in 0
+ 61003768 × 70000 what gives us 4270263760000
+ 61003768 × 300000 what gives us 18301130400000
+ 61003768 × 0000000 what gives us 0
+ 61003768 × 20000000 that equals 1220075360000000

= 1242706110826264
