1) 1.69 * 0,63=43,47
2. 10,098 : 5,4=1,870074074074074
3. 43,47-1,870074074074074=41,59992592592593
4. 41,59992592592593- 20,54=21,05992592592593
5.21,05992592592593: 0, 324=64,9997713763146≈65
2) 1. 0,98 * 3,8=41,724
2. 0,132 : 5,5=0,0240909090909091
3. 41,724-0,0240909090909091=41,69990909090909
4. 41,69990909090909-2,45=39,24990909090909≈39,25