The calculation is as follows:
20 * 256 = 5,1205,120 + 28 = 5,1485,148 - 5 = 5,1435,143 + 89 = 5,2325,232 + 89 = 5,3215,321 + 89 = 5,4105,410 / 2 = 2,705
Therefore, 20*256+28-5+89+89+89:2 = 2,705.
The calculation is as follows:
20 * 256 = 5,120
5,120 + 28 = 5,148
5,148 - 5 = 5,143
5,143 + 89 = 5,232
5,232 + 89 = 5,321
5,321 + 89 = 5,410
5,410 / 2 = 2,705
Therefore, 20*256+28-5+89+89+89:2 = 2,705.