2 3/8 x 1 4/5 - 3/5 x 2 3/8 - 1 1/5 x 3/8.

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To simplify the expression, we can first convert all the mixed numbers to improper fractions:

2 3/8 can be written as 19/8
1 4/5 can be written as 9/5
3/5 remains as 3/5
2 3/8 can be written as 19/8
1 1/5 can be written as 6/5
3/8 remains as 3/8

Now we can substitute these values back into the expression and simplify:

19/8 x 9/5 - 3/5 x 19/8 - 6/5 x 3/8
= (171/40) - (57/40) - (18/40)
= 171/40 - 57/40 - 18/40
= (171 - 57 - 18) / 40
= 96/40
= 24/10
= 12/5

Therefore, 2 3/8 x 1 4/5 - 3/5 x 2 3/8 - 1 1/5 x 3/8 simplifies to 12/5.