Add the place values together to form the number.<br><br>
&bull; 80&thinsp;000 + 1&thinsp;000 + 500 + 20 + 4<br>
&bull; = 81&thinsp;000 + 500 + 20 + 4<br>
&bull; = 81&thinsp;500 + 20 + 4<br>
&bull; = 81&thinsp;520 + 4<br>
&bull; = 81&thinsp;524<br><br>
Final Answer: 81524