Answer:
(this is the equation I perceived from your information, if it's not correct make sure to notify me in the comment section below)
3.33x = 55.5*38
Simplify;
3.33x = 2109
Isolate 'x' by applying inverse operations,
The inverse operation of multiplication is division because 3.33 is being multiplied by 'x'.
÷3.33 ÷3.33
x = 633.333..