987=9.100+8.10+7.1=9.102+8.10+7.100
2564=2.1000+5.100+6.10+4.1=2.103+5.102+6.10+4.100
abcde=a.10000+b.1000+c.100+d.10+e.1=a.104+b.103+c.102+d.10+e.100
987=900+80+7=9.100+8.10+7.1=9.102+8.101+7.100
2564=2000+500+60+4=2.1000+5.100+6.10+4.1=2.103+5.102+6.101+4.100
abcde=10000.a+1000.b+100.c+10.d+1.e=104.a+103.b+102.c+101.d+100.e
987 = 9 x 100 + 8 x 10 + 7 x 1 = 9 x 102 + 8 x 10 + 7 x 100
2564 = 2 x 1000 + 5 x 1000 + 6 x 10 + 4 x 1 = 2 x 103 + 5 x 102 + 6 x 10 + 4 x 100
abcde = a x 100000 + b x 1000 + c x 100 + d x 10 + e x 1x e = 104 x a + 103 x b + 102 x c + 101 x d + 100 x e