let's see what to do buddy...
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Step (1)
We have 600 $ .
One year later ;

Now we have 624 $.
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Step (2)
One year later :

After two years we have 649 $.
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Step (3)
One year later :

After three years we have 675 $.
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Step (4)
One year later :

So after four years we have 702 $.
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Step (5)
One year later :

After five years we have 730 $.
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Step (6)
One year later :

So After six years we have 759 $.
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Step (7)
One year later :

So after seven years we have 789 $.
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There's no any more steps.
And we're done.
Thanks for watching buddy good luck.
♥️♥️♥️♥️♥️