There is no single post code for the United Kingdom. There are millions of them.
1, 5, 269, 1345
3355
From 1345 to 3000 is 1655.
1345 - 346 = 999
1000 g = 1 kg ⇒ 1345 g = 1345 ÷ 1000 kg = 1.345 kg
The cubed number for 1345 is 2 433 138 625 the cuberoot of 1345 ≈ 11,038 The question is moot.
There are 1345 meters in 1.345 kilometers.
1345 rounded to the next 1000 = 1345000
45/117 = 5/1345/117 = 5/1345/117 = 5/1345/117 = 5/13
345 = 345
nothing