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