1 to 100 million of the natural number, the sum of the numbers after the split of all numbers

1 to 100 million of the natural number, the sum of all the number of split numbers, such as 286 split into 2, 8, 6, such as 1 to 11 after splitting the sum of the numbers 1 + ... + 9 + 1 + 0 + 1 + 1

/*** 1 to 100 million of the natural number, the sum of all the number of split numbers, * such as 286 split into 2, 8, 6, * such as 1 to 11 after splitting the sum of the numbers + + 1 + ... + 9 + 1 + 0 + 1 + 1 *@paramargs*/     Public Static voidMain (string[] args) {/*** Thinking analysis * single digit: 10 digits: Hundreds: Thousands: thousand digits: 100,000 digits: Million dollar number: Chiwan: Billion*/        inta=1+2+3+4+5+6+7+8+9;//a=45        intaa=10+a+2*10+a+3*10+a+4*10+a+5*10+a+6*10+a+7*10+a+8*10+a+9*10+a;//=10* (1+2+3+4+5+6+7+8+9) +9a;        intaaa=100+aa+2*100+aa+3*100+aa+4*100+aa+5*100+AA+6*100+AA+7*100+AA+8*100+AA+9*100+AA;//=100A+9AA        intaaaa=1000+aaa+2*1000+aaa+3*1000+aaa+4*1000+aaa+5*1000+AAA+6*1000+AAA+7*1000+AAA+8*1000+AAA+9*1000+AAA;//=1000a+9aaa        intaaaaa=10000+aaaa+2*10000+aaaa+3*10000+aaaa+4*10000+aaaa+5*10000+AAAA+6*10000+AAAA+7*10000+AAAA+8*10000+AAAA+9*10000+AAAA;//=10000a+9aaaa;        intaaaaaa=100000+aaaaa+2*100000+aaaaa+3*100000+aaaaa+4*100000+aaaaa+5*100000+AAAAA+6*100000+AAAAA+7*100000+AAAAA+8*100000+AAAAA+9*100000+AAAAA;//=100000a+9aaaaa;        intaaaaaaa=1000000+aaaaaa+2*1000000+aaaaaa+3*1000000+aaaaaa+4*1000000+aaaaaa+5*1000000+aaaaaa+6*1000000+AAAAAA+7*1000000+AAAAAA+8*1000000+AAAAAA+9*1000000+AAAAAA;//=1000000a+9aaaaa;Long aaaaaaaa= ((10000000l*a) + (9l*aaaaaaa)); intAaaaaaaaa=1;        System.out.println (a);        SYSTEM.OUT.PRINTLN (AA);        System.out.println (AAA);        System.out.println (AAAA);        System.out.println (AAAAA);        System.out.println (AAAAAA);        System.out.println (AAAAAAA);        System.out.println (AAAAAAAA);        System.out.println (AAAAAAAAA); Longsum=a* (1+10+100+1000+10000+100000+1000000+10000000) +9l* (A+AA+AAA+AAAA+AAAAA+AAAAAA+AAAAAAA) +aaaaaaaaa; SYSTEM.OUT.PRINTLN (sum);

The output is:

4585512195154755184279521085155234766395256289755512820759751

Online to see the topic, you try to write.

1 to 100 million of the natural number, the sum of the numbers after the split of all numbers