{[126-(36-31)2.2]-9}.1001
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$\textbf{a)}$
$\{[126-(36-31)^2\cdot2]-9\}\cdot1001$
$=\{126-5^2\cdot2-9\}\cdot1001$
$=(126-50-9)\cdot1001$
$=67\cdot1001$
$=67067.$
$\textbf{b)}$
$\{315-[(60-41)^2-361]\cdot4217\}+2885$
$=\{315-(19^2-361)\cdot4217\}+2885$
$=\{315-(361-361)\cdot4217\}+2885$
$=315+2885$
$=3200.$
A={ [ 261-(36-31)^3*2]-9}*1001
={[261-53*2]-9}*2001
={[261-125*2]-9}*2001
={[261-250]-9}*2001
= 2*2001
= 4002
A={[261-(36-31)3.2]-9}.1001
A={[261-53.2]-9}.1001
A={[261-125.2]-9}.1001
A={[261-250]-9}.1001
A={11-9}.1001
A=2.1001
A=2002
$\textbf{A}$
$A=[261-(36-31)^3\cdot2]-9\cdot1001$
$=[261-5^3\cdot2]-9009$
$=[261-125\cdot2]-9009$
$=(261-250)-9009$
$=11-9009$
$=-8998.$
$\textbf{B}$
$B=\{315-[(60-41)^2-361]\cdot4217\}+2885$
$=\{315-(19^2-361)\cdot4217\}+2885$
$=\{315-(361-361)\cdot4217\}+2885$
$=315-0+2885$
$=3200.$
a.\(\left[545-\left(45+4.25\right)\right]:50-2000:250+2^{15}:2^{13}\)
=\(\left[545-145\right]:50-8+2^2\)
=\(400:50-8+4\)
=8-8+4
=4
b.\(\left[504-\left(25.8+70\right)\right]:9-15+9^0\)
=\(\left[504-270\right]:9-15+1\)
=234:9-14
=26-14
=12



={[126-5^2.2]-9}.1001
={[126-25.2]-9}.1001
={[126-50]-9}.1001
={76-9}.1001
=67.1001=67067