message: Fix buy and sell NaN values when changing exchange rate.
diff: @@ -85,8 +85,9 @@ export default class AddOffer extends Component {
  return
  }
  - buyAmount = new BigNumber(String(sellAmount)).multipliedBy(value)
  - sellAmount = new BigNumber(String(buyAmount)).dividedBy(value)
  +
  + buyAmount = new BigNumber(Number(sellAmount)).multipliedBy(value)
  + sellAmount = new BigNumber(Number(buyAmount)).dividedBy(value)
  this.setState({
  buyAmount,
  