Answer :

[tex]90,000/1,000=90[/tex]
Your answer is 90 kilograms.
[tex]1kg=1,000g!!!\\\\therefore\ 1g=\frac{1}{1,000}kg=0.001kg\\--------------------\\90,000g=90,000\cdot0.001kg=\boxed{90kg}\\\\Answer:\boxed{\boxed{90,000g=90kg}}[/tex]