Brain Teaser : IF Your Mind Working Like Bullet Train Find 1839

Are you want to test your mind speed 

To be ready for this interesting brain teaser

Because only a mind with the speed of a bullet train can solve this brain teaser

So in this picture you have see crowed of number 1389

But one more number are hidden between them

That number is 1839 are you see this number?

Let's try to find this number in 15 secs

Not found ? Then see upper side arrow

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