9.042 divide by 2.1 show me how to solve this

1. First, right the numbers as common fractions, improper to be exact:

9.042=4521/500 2.1=21/10

2. Rewrite the equation

(4521/500) / (21/10) = (

3. Since you are dividing, you can change the symbol to times if you replace the divisor by its reciprocal 4521/500) * (10/21)

4. Multiply, divide and simply

5. the final answer could be 1507/350 or4.30571428

The answer is 4.306 because you shift both the decimals 1 place to the right so 21x4 is is 84,90-84 is 6 bring down the four, 21x3 is 63 and it just keeps going so you round it to 4.306