A B
1 CRM1 04300100A1
2 CRM2 020LH200A1
3 CRM1 020LH200A1
4 CRM1 04300100A1
5 CRM2 04305100A1
6 CRM1 04306100A1
7 CRM1 020LH200A1
8 CRM2 020LH200A1
9 CRM1 04304100A1
10 CRM2 03040100A1
11 CRM1 03040100A1
12 CRM2 04302100A1
13 CRM1 04300100A1
因数据量大
请问在A列中首先符合字符"CRM1”,然后同时B列中符合特定字符"430”的个数统计的excel 函数