200 + 52+6∗852 + 6*852+6∗8 + 300= 200 + 52+4852 + 4852+48 + 300= 200 + 100 + 300= 600
300 + 6∗5+706*5 + 706∗5+70 + 500= 300 + 30+7030 + 7030+70 + 500= 300 + 100 + 500= 900
72+4<em>772 + 4<em>772+4<em>7 + 9</em>9+199</em>9 + 199</em>9+19 = 72+2872 + 2872+28 + 81+1981 + 1981+19 = 100 + 100= 200
7<em>6+587<em>6 + 587<em>6+58 + 9</em>9+99</em>9 + 99</em>9+9 = 42+5842 + 5842+58 + 81+981 + 981+9 = 100 + 90= 190
600 + 900 + 200 + 190= 1890
Final answer: 1890
200 + 52+6∗852 + 6*852+6∗8 + 300
= 200 + 52+4852 + 4852+48 + 300
= 200 + 100 + 300
= 600
300 + 6∗5+706*5 + 706∗5+70 + 500
= 300 + 30+7030 + 7030+70 + 500
= 300 + 100 + 500
= 900
72+4<em>772 + 4<em>772+4<em>7 + 9</em>9+199</em>9 + 199</em>9+19 = 72+2872 + 2872+28 + 81+1981 + 1981+19 = 100 + 100
= 200
7<em>6+587<em>6 + 587<em>6+58 + 9</em>9+99</em>9 + 99</em>9+9 = 42+5842 + 5842+58 + 81+981 + 981+9 = 100 + 90
= 190
600 + 900 + 200 + 190
= 1890
Final answer: 1890