Solve for X in the Following

Express the following dosage as a ratio of mg:mL.Use only numbers;no spaces,for example 3:5;if a number is less than 1,place a 0 to the left of the decimal. An injectable solution contains 500 mg in each 0.7 mL: _________

Solve for x. 2.2:1 = x:145 x = _____