13 440 : 32 7+7 123=921
1. 13 440 : 32 = 420
2. 420 : 7 = 60
3.7 * 123 = 861
4.60 + 861 = 921
(1638 : 39 +13 284 : 36) : 1=411
1.1638:39 = 42
2.13284:36 = 369
3.49+369 = 411
4.411:1 = 411
509 * 603 – 999 999 : 11 + 1932=31591
1.509*603=320670
2.999999:11=999
3.3982+999=4881
4.320670-4881=31591
(90050-219*380+190)/90=78
1.219*380=83220
2. 90050-83220=6830
3. 6830+190=7020
4.7020/90=78
13 440 : 32 7+7 123=921
1. 13 440 : 32 = 420
2. 420 : 7 = 60
3.7 * 123 = 861
4.60 + 861 = 921
(1638 : 39 +13 284 : 36) : 1=411
1.1638:39 = 42
2.13284:36 = 369
3.49+369 = 411
4.411:1 = 411
509 * 603 – 999 999 : 11 + 1932=31591
1.509*603=320670
2.999999:11=999
3.3982+999=4881
4.320670-4881=31591
(90050-219*380+190)/90=78
1.219*380=83220
2. 90050-83220=6830
3. 6830+190=7020
4.7020/90=78