@Nullable
  private static PsiBinaryExpression getRhs(@NotNull PsiAssignmentExpression assignment) {
    final PsiBinaryExpression rhs =
      ObjectUtils.tryCast(PsiUtil.skipParenthesizedExprDown(assignment.getRExpression()), PsiBinaryExpression.class);
    if (rhs == null ||
        !rhs.getOperationTokenType().equals(JavaTokenType.DIV) ||
        !TypeConversionUtil.isIntegralNumberType(rhs.getType())) {
      return null;
    }
    return rhs;
  }
@Nullable
  private static PsiBinaryExpression getRhs(@NotNull PsiAssignmentExpression assignment)