0,364:7/25+5/16:0,125+2 1/2*0,8

First, let's simplify each part of the expression:

0,364 = 364/100 = 91/25
7/25 + 5/16 = 112/400 + 125/400 = 237/400
0,125 = 125/1000 = 1/8
2 1/2 = 5/2
0,8 = 8/10 = 4/5

Now, substitute the simplified values back into the expression:

91/25 : 237/400 : 1/8 + 5/2 * 4/5

Next, perform the operations in order:

Convert the ratios to fractions by inverting the divisor and then multiplying:
91/25 ÷ 400/237 = (91/25) (237/400) = 21507/10000
Next, add and multiply:
1/8 + 5/2 4/5 = 1/8 + 10/5 = 1/8 + 2 = 3/8

Substitute these values back into the original expression:

21507/10000 : 3/8

Therefore, the simplified form of the expression is 21507/10000 : 3/8.