204 * 85 + ( 10000 - 1975 ) : 25 = 17661
1) 10000 - 1975 = 8025
2) 204 * 85 = 17340
3) 8025 : 25 = 321
4) 17340 + 321 = 17661
204 * 85 + ( 10000 - 1975 ) : 25 = 17661
1) 10000 - 1975 = 8025
2) 204 * 85 = 17340
3) 8025 : 25 = 321
4) 17340 + 321 = 17661