Answer :

To write "thirty-six million ninety thousand" as a number, let's break it down step-by-step:

1. Thirty-six million: We start with the millions place, which is 36 million. In numerical form, that is written as:
[tex]\[ 36,000,000 \][/tex]

2. Ninety thousand: Next, we consider the thousands place, which is ninety thousand. In numerical form, that is written as:
[tex]\[ 90,000 \][/tex]

3. Combining them: Since there are no additional units, hundreds, or tens specified, we simply combine the two parts by adding them together directly:
[tex]\[ 36,000,000 + 90,000 = 36,090,000 \][/tex]

So, "thirty-six million ninety thousand" is written numerically as:
[tex]\[ 36,090,000 \][/tex]

Therefore, the final answer is:
[tex]\[ 36,090,000 \][/tex]