Условие:

7000 * 100 + 6000;
8600 * 10060000;
999999 + 1;
1000000 : 10;
64 * 7;
45 * 9.

7000 * 100 + 6000 = 700000 + 6000 = 706000
 
8600 * 10060000 = 86000060000 = 800000
 
999999 + 1 = 1000000
 
1000000 : 10 = 100000
 

× 64 7 ¯ 448