Transformers 220 or 110 VAC
Keep looking for a 220/18 V transformer. You can not plug a 110 V transformer into a 220 V supply and expect anything other than smoke.

You can, however, use a transformer with dual 110 V primaries.







simulate this circuit &ndash; Schematic created using CircuitLab

Figure 1.

In your case you would use the configuration of Figure 1a.